In 2008 Acura balanced luxury, sport, and everyday usability across a compact but distinct sedan lineup. The RL carried the flagship role, the TL leaned harder into sport-sedan character, and the TSX offered a smaller, sharper European-flavored package that still fit comfortably into Acura’s premium identity. Tire sizing for 2008 Acura varies by model rather than staying uniform across the range, with five radial sizes spread across three models and both 17- and 18-inch fitments in play, plus a Euro-metric size unique to the RL. The first step is confirming whether you have an RL, TL, or TSX, then matching the exact size and wheel diameter before choosing a tire.
Which Tire Size Is Right for Your 2008 Acura
Five tire sizes are used across 2008 Acura vehicles, and they vary by model rather than being shared across the full lineup. All of them are radial sizes, so the key decision is confirming the correct model and wheel diameter first, especially because the TL alone spans both 17- and 18-inch fitments and the RL uses both a standard metric and a Euro-metric size. Understanding that distinction before choosing a product saves time and helps ensure the right match.
Year(s): 2008|Fit(s): RL|Construction: Radial|Rim: 17-in rim
245/50R17 is a radial metric size with a 245-millimeter section width, a 50-series aspect ratio, and a 17-inch rim diameter. Product coverage is not shown here, so brand, sidewall, and speed-rating differences depend on the specific tire selected in this size. This size is specific to the 2008 Acura RL rather than universal across the year and make. It suits an RL owner who needs to stay with the model’s standard 17-inch metric fitment.
Year(s): 2008|Fit(s): RL|Construction: Radial|Rim: 460 mm rim
245-680R460 is a Euro-metric radial size in which 245 denotes section width in millimeters, 680 is the overall diameter in millimeters, and 460 is the wheel diameter in millimeters. Product coverage is not shown here, so sidewall style, speed rating, and tube status depend on the exact tire chosen in this size. This size is specific to the 2008 Acura RL and points to the RL’s distinctive millimeter-based wheel fitment rather than the more common inch-based setup. It is the size to focus on only after confirming the car is equipped with the matching 460 mm wheels.
Year(s): 2008|Fit(s): TL|Construction: Radial|Rim: 17 in
235/45R17 is a radial metric size with a 235-millimeter section width, a 45-series aspect ratio, and a 17-inch rim diameter. It is available from BFGoodrich and Nitto in blackwall form, and current products carry W speed ratings up to 168 mph. This size is specific to the 2008 Acura TL rather than shared across the lineup. It is the correct starting point for a TL owner running the 17-inch wheel package and looking for modern radial road manners.
Year(s): 2008|Fit(s): TL|Construction: Radial|Rim: 18 in
235/40R18 is a radial metric size with a 235-millimeter section width, a 40-series aspect ratio, and an 18-inch rim diameter. It is available from BFGoodrich and Nitto in blackwall form, and speed ratings vary by product: W-rated versions are capped at 168 mph, while the BFGoodrich g-Force Phenom T/A carries a Y rating with a 186 mph ceiling. This size is specific to the 2008 Acura TL and applies to cars equipped with the larger 18-inch wheel setup. It is the right path when your TL uses the sportier 18-inch fitment and you want to stay with that wheel diameter.
Year(s): 2008|Fit(s): TSX|Construction: Radial|Rim: 17 in
215/50R17 is a radial metric size with a 215-millimeter section width, a 50-series aspect ratio, and a 17-inch rim diameter. It is available from BFGoodrich in blackwall form, with W speed ratings up to 168 mph across the current product range. This size is specific to the 2008 Acura TSX rather than the full 2008 Acura line. It is the natural choice for TSX owners who want to preserve the model’s intended 17-inch fitment and overall balance.
Three Acura models are covered for 2008: the RL, TL, and TSX. They do not share one common tire size, so identifying the exact model is essential before moving on to a size choice; on the RL, wheel type matters just as much because one fitment uses a millimeter-diameter wheel. Select a model below to narrow your fitment history and see the tire options that apply to that specific car.
2008 Acura RL
The 2008 Acura RL was Acura’s flagship sedan, aimed at buyers who wanted a more understated alternative to European luxury sedans with strong technology content and all-weather confidence. Its tires mount either on a 17-inch wheel in 245/50R17 form or on a distinctive 460 mm wheel in 245-680R460 form, so confirming the actual wheel fitted to the car is the first step.
The 2008 Acura TL was the brand’s sport-luxury sweet spot, with crisp styling and a strong enthusiast following that still makes it popular today. Its tires mount on either 17-inch or 18-inch wheels depending on configuration, so wheel diameter needs to be confirmed before narrowing the tire choice.
The 2008 Acura TSX was the smaller, more agile sedan in the lineup, with a reputation for balanced handling and a more tightly packaged feel than the larger RL and TL. Its tire fitment is straightforward, using 215/50R17 on a 17-inch wheel, which makes model identification more important than comparing multiple wheel packages.
Ten products are available across three tire sizes for 2008 Acura vehicles. The 235/45R17 offers three BFGoodrich and Nitto radial blackwall choices, 235/40R18 has four BFGoodrich and Nitto radial blackwalls, and 215/50R17 includes three BFGoodrich radial blackwalls. Confirm the exact size and wheel diameter first, since speed ratings vary within the 18-inch TL fitment.
These FAQs focus on the model-by-model tire differences within the 2008 Acura lineup, including the RL’s unusual Euro-metric fitment, the TL’s split between 17- and 18-inch wheels, available blackwall radial choices, and smart care practices for low-use modern collector sedans.
Size Basics & Fitment
What tire sizes fit 2008 Acura vehicles?
2008 Acura vehicles use five sizes across three models. The RL uses either 245/50R17 or 245-680R460, the TL uses either 235/45R17 or 235/40R18, and the TSX uses 215/50R17. The 17-inch sizes with product coverage have rim-width ranges of 7.5 to 9.0 inches for 235/45R17 and 6.0 to 7.5 inches for 215/50R17, while 235/40R18 fits rims from 8.0 to 9.5 inches depending on the tire.
That means year and make alone are not enough for a confident match on a 2008 Acura. You need to identify the exact model first, then confirm whether the car is on 17-inch, 18-inch, or in the RL’s special case, 460 mm wheels. Once those basics are confirmed, choosing among available products becomes much simpler because the fitment path narrows immediately.
What does 245-680R460 mean on a 2008 Acura tire?
On a 2008 Acura, 245-680R460 is a Euro-metric radial size. The 245 is the section width in millimeters, 680 is the overall tire diameter in millimeters, the R indicates radial construction, and 460 is the wheel diameter in millimeters rather than inches. That makes it very different from the more familiar 17- and 18-inch metric sizes used elsewhere in the 2008 Acura range.
The practical takeaway is that a 245-680R460 tire belongs only on a matching 460 mm wheel. It is not interchangeable with a 17-inch fitment even if the tire appears similar at a glance. If you own a 2008 Acura RL, inspect the wheel and existing tire markings carefully before ordering, because this is a specialized fitment that depends on the wheel itself, not just the model badge.
Do all 2008 Acura models use the same tire size?
No, 2008 Acura models do not use one common tire size. The RL has two fitments, including a conventional 17-inch metric size and a Euro-metric millimeter-wheel size, the TL has separate 17-inch and 18-inch fitments, and the TSX uses its own 17-inch size. Every size in the 2008 Acura range is model-specific rather than shared across RL, TL, and TSX.
That matters because a tire that is correct for one 2008 Acura sedan may be completely wrong for another, even within the same year. The safest approach is to confirm the exact model and read the size directly from the sidewall of the tire already on the car or from the vehicle placard. That extra step prevents confusion between similar-looking sizes such as the TL’s 17- and 18-inch options.
Buying the Right Tire
What sidewall styles are available for 2008 Acura tires?
Current product coverage for the 2008 Acura TL and TSX centers on blackwall radial tires. The 235/45R17 used on the TL, the 235/40R18 used on the TL, and the 215/50R17 used on the TSX are all available in blackwall form. That appearance suits the original character of a modern sport-luxury Acura well, since these cars were designed around contemporary low-profile radial styling rather than wide whitewalls or other vintage sidewall treatments.
For most 2008 Acura owners, sidewall choice is therefore less about period-correct decoration and more about selecting the right size, speed rating, and brand character. If the goal is a factory-like look, blackwall is the natural visual match for the era. Once appearance is settled, compare the exact product’s load, rim-width compatibility, and speed rating to make sure the tire also matches how the car will be driven.
What brands make tires for 2008 Acura vehicles?
BFGoodrich and Nitto cover the currently supported 2008 Acura sizes shown here. For the TL’s 235/45R17, both BFGoodrich and Nitto are available. The TL’s 235/40R18 is also covered by BFGoodrich and Nitto, while the TSX’s 215/50R17 is covered by BFGoodrich. All of these are radial blackwall tires aimed at modern road use rather than vintage-style specialty construction.
Brand choice on a 2008 Acura usually comes down to the exact size on the car and the type of road feel you want from a modern performance-oriented radial. A TL owner has the broadest cross-brand choice because both 17- and 18-inch fitments are covered. A TSX owner has a narrower field, so checking the individual tire’s rim-width range and speed rating becomes especially important when comparing one option against another.
What is the difference between BFGoodrich and Nitto choices for the 2008 Acura TL?
On the 2008 Acura TL, both BFGoodrich and Nitto cover the 235/45R17 and 235/40R18 sizes. In 235/45R17, BFGoodrich g-Force Sport COMP-2 and g-Force COMP-2 A/S fit 7.5 to 9.0-inch rims, while the Nitto NT555 G2 fits 7.5 to 9.0 inches with an 8.0-inch measuring width. In 235/40R18, BFGoodrich options fit 8.0 to 9.5-inch rims, and the Nitto NT555 G2 fits 8.0 to 9.5 inches with an 8.5-inch measuring width.
Those differences do not change the required tire size, but they can matter when matching a tire to the wheel already on the car. If your TL wheels sit near the narrow or wide end of the acceptable rim range, compare the product details carefully instead of assuming every 235/45R17 or 235/40R18 behaves the same. That is especially useful for owners sorting through factory-style wheels versus aftermarket widths.
Fitting & Setup
What rim width do 2008 Acura tires require?
Rim-width requirements vary by size on a 2008 Acura. The TL’s 235/45R17 fits rims from 7.5 to 9.0 inches, the TL’s 235/40R18 fits 8.0 to 9.5 inches, and the TSX’s 215/50R17 fits 6.0 to 7.5 inches. Within those ranges, some products also identify a measuring width, such as 8.0 inches for Nitto’s 235/45R17 and 8.5 inches for Nitto’s 235/40R18.
That means wheel width should be checked before choosing among tires in the same size, especially if the car has aftermarket wheels. A tire may share the correct diameter and section width but still be a poor match for the rim if the wheel falls outside the approved range. Staying inside the stated width range helps maintain the tire’s intended shape and road behavior.
Do 2008 Acura tires require inner tubes?
The currently covered 2008 Acura TL and TSX sizes are modern radial fitments with no tube-type markings shown in the tire size designations. The available 235/45R17, 235/40R18, and 215/50R17 products are contemporary blackwall radials intended for modern wheel use. The RL’s product coverage is not shown here, so tube questions for its two sizes should be settled by the exact tire and wheel combination on the car.
For most 2008 Acura sedans, inner tubes are not part of the normal tire conversation the way they would be on much older collector vehicles. Even so, the wheel and valve condition still matter. Before mounting any replacement tire, confirm the exact sidewall marking on the chosen product and inspect the wheels for damage, corrosion, or sealing issues that could affect air retention.
Can the original 2008 Acura wheels be used with all tire sizes?
No, original 2008 Acura wheels are not interchangeable across all five sizes. The TL alone uses both 17-inch and 18-inch diameters, the TSX uses a different 17-inch size with a narrower rim-width range, and the RL can use either a 17-inch metric tire or a 460 mm Euro-metric fitment depending on wheel type. Diameter is the first hard limit, and on the RL the millimeter wheel is a completely separate fitment standard.
A wheel from one 2008 Acura model should never be assumed to work with another model’s tire size just because the cars are from the same brand and year. Confirm the wheel diameter stamped on the wheel or marked on the existing tire, then compare the tire’s approved rim-width range to the wheel actually on the car. That approach is much more reliable than trying to generalize across the lineup.
Maintenance, Storage & Longevity
How should I store a 2008 Acura when the tires are fitted?
A 2008 Acura should be stored away from direct sunlight, standing moisture, and ozone sources such as electric motors, battery chargers, and air compressors. Keep the tires properly inflated, move the car periodically if possible, and avoid leaving it parked for long periods on one contact patch. Since the 2008 Acura range here uses radial tires, flat-spotting is usually less severe than with older bias-ply designs, but long static storage can still affect ride quality and casing shape.
If the car will sit for an extended season, clean the tires, store the vehicle on a cool dry surface, and consider repositioning the car or supporting it appropriately to reduce prolonged load on one area. Owners who treat a TL, TSX, or RL as a low-mileage weekend car should build storage care into the routine, because age and environment usually matter more than mileage for collector-use tires.
How long do tires on a 2008 Acura typically last?
On a 2008 Acura, tire life should be judged by age as much as by tread wear. A good collector-car rule is to begin evaluating tires closely once they are around five to seven years old and to consider replacement around the ten-year mark even if tread remains. The DOT date code on the sidewall gives the tire’s age, and that matters because many RL, TL, and TSX examples are driven far less than they were when new.
A low-mileage tire can still be ready for replacement if the rubber has hardened, the sidewalls are cracked, or the casing no longer feels stable on the road. Owners of 2008 Acura sedans often focus on tread depth first, but age-related deterioration is often the more important factor. Date-code awareness is one of the simplest ways to keep a modern-era collector or enthusiast car on sound rubber.
How often should tires on a 2008 Acura be inspected?
Tires on a 2008 Acura should be inspected before every drive and given a more thorough check before any longer trip. Look for sidewall cracking, punctures, bulges, uneven wear, and pressure loss, and pay attention to any vibration or pull that develops during driving. Because these cars use modern radial performance sizes, shoulder wear and impact damage from potholes are worth watching closely, especially on the lower-profile TL fitments.
A quick walk-around catches many problems early, but a hands-on inspection matters too. Check air pressure when the tires are cold, inspect the inner sidewall if the wheel design allows, and do not forget the spare if the car still carries one. If the car has been parked for weeks or months, the inspection should be more deliberate before returning it to regular road use.
Restoration & Authenticity
What tires were originally fitted to the 2008 Acura RL?
A 2008 Acura RL originally belonged to an era when radial tires were fully standard, so a radial construction is the correct baseline for authenticity and proper character. The RL uses either 245/50R17 or 245-680R460 depending on the wheel fitted to the car, and that wheel-specific distinction matters more than searching for an old-style construction change. No original-equipment brand should be assumed without confirming the exact market and build details of the individual car.
For a factory-correct restoration, start by verifying which wheel system the car actually carried when new. An RL equipped with the Euro-metric wheel should stay with that millimeter-based fitment unless the car has been converted, while a 17-inch-wheel car should remain on the standard metric size. If the car is being judged, a marque specialist or Acura-focused club is the best source for market-specific confirmation.
Does correct tire fitment matter for showing a 2008 Acura?
Yes, correct tire fitment matters when showing a 2008 Acura, even though it is a newer collector vehicle than the cars most people associate with concours judging. Judges and knowledgeable enthusiasts will notice the right size, the correct wheel diameter, and whether the overall sidewall appearance matches the car’s period. On a 2008 Acura RL, using the wrong wheel-system tire would stand out immediately, and on a TL or TSX an incorrect profile can alter the car’s stance enough to be obvious.
For most 2008 Acura show cars, authenticity is less about vintage styling cues and more about preserving the proportions and technical character the car had when new. Staying with the proper blackwall radial look and the correct diameter matters more than chasing novelty. Event standards vary, so owners preparing for judged competition should check the specific rules and compare them with Acura marque resources before mounting tires.
What is the difference between BFGoodrich g-Force Sport COMP-2 and BFGoodrich g-Force Phenom T/A for the 2008 Acura?
For the 2008 Acura sizes where both appear, BFGoodrich g-Force Sport COMP-2 and BFGoodrich g-Force Phenom T/A share the same basic blackwall radial format but differ in size coverage and some published specifications. In 235/40R18, the Sport COMP-2 carries a 91W service description with a 1,356-pound load figure at 51 psi, while the Phenom T/A carries a 95Y rating with a 1,521-pound load figure at 50 psi. In 215/50R17, the Phenom T/A weighs 24.87 pounds and the Sport COMP-2 is 25 pounds, both with 95W service descriptions.
Those differences matter most for owners who want to compare one BFGoodrich option against another without changing size. The Phenom T/A’s higher speed letter in 235/40R18 may appeal to some TL owners, while others may focus more on wheel-width compatibility and overall tire character. The key is to compare the exact product within the exact size your Acura uses rather than assuming the same series behaves identically in every fitment.
Safety & Road Use
Are 2008 Acura tires safe for highway driving?
Yes, the supported 2008 Acura tire sizes shown here are modern radial fitments with highway-capable speed ratings. The 235/45R17 and 215/50R17 products carry W ratings, which correspond to 168 mph, while the 235/40R18 range includes both W-rated options at 168 mph and a Y-rated option at 186 mph. In normal real-world use, those ratings exceed any sensible highway speed and are well beyond what a public-road driver should treat as a target.
Highway safety on a 2008 Acura depends at least as much on tire age, inflation, alignment, and the car’s mechanical condition as it does on the speed symbol molded into the sidewall. A fresh, correctly inflated tire in the proper size is the right foundation, but suspension wear, braking condition, and impact damage can affect stability just as much. For older enthusiast cars, condition always matters more than theoretical speed capability.
What inflation pressure should I use for 2008 Acura tires?
Inflation pressure on a 2008 Acura should follow the vehicle placard or owner’s manual for the factory recommendation, then be checked against the tire maker’s maximum-pressure and load information for the exact tire you choose. Among the supported sizes here, load-and-pressure figures include 1,477 pounds at 51 psi for one 235/45R17, 1,609 pounds at 50 psi for one 235/45R17, 1,356 pounds at 51 psi for one 235/40R18, 1,521 pounds at 50 psi for one 235/40R18, and 1,521 pounds at 50 psi for 215/50R17 products.
Those figures are not a blanket recommendation to inflate every tire to 50 or 51 psi. They show the pressure at which that tire reaches its stated maximum load, not necessarily the pressure Acura intended for normal driving. Use the car’s factory guidance as the everyday baseline, then fine-tune only within the tire maker’s limits and with attention to ride, wear pattern, and the exact size mounted on the car.
What should I check before taking a 2008 Acura on a longer drive?
Before taking a 2008 Acura on a longer drive, inspect each tire for cracking, cuts, punctures, bulges, uneven tread wear, and correct cold inflation pressure. Confirm that the tire size matches the wheel actually on the car, especially on an RL with 245-680R460 versus 245/50R17 or a TL that may have either 17-inch or 18-inch wheels. If the car still carries a spare, inspect that as well rather than assuming it is ready for use.
Tires are only one part of the pre-trip check on a modern-era enthusiast sedan. A longer drive is also the right time to confirm brakes, fluids, battery condition, and suspension health, because a vibration or pull blamed on tires can come from other systems. When the car has spent long periods parked, take a short local test drive first so any pressure loss, flat-spotting, or wheel-related issue shows up close to home.
