The 2008 Audi TT Quattro belongs to the second-generation TT family, a period when Audi sharpened the car’s coupe shape while keeping its compact all-wheel-drive sports-car character intact. Buyers usually approach this model with handling, stance, and wheel package details already in mind, because tire fitment changes with sub-model and rim diameter. This TT Quattro uses radial tires in three primary sizes: 245/45R17, 245/40R18, and 255/35R19. Available choices include performance-oriented series, blackwall styling, and on some sizes redline or raised white letter treatments. The key is matching the exact sub-model and wheel diameter first, then choosing the tire style and specification that suits the car’s setup and use.
Which Tire Size Is Right for The 2008 Audi TT Quattro
Three tire sizes apply to the 2008 Audi TT Quattro, and the right one depends first on identifying the exact sub-model and confirming wheel diameter. The 3.2 uses either 245/45R17 or 245/40R18, while the 3.2 S Line uses 255/35R19. All are radial fitments, so the real decision is not bias-ply versus radial, but selecting the correct wheel-size match and then comparing series, sidewall style, and product specifications within that size.
245/40R18 is a metric radial size in which 245 identifies the nominal section width in millimeters, 40 is the aspect ratio, R designates radial construction, and 18 is the rim diameter in inches. On the 2008 Audi TT Quattro, this size supports a lower-profile 18-inch wheel setup used on the 3.2. Product choices include BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, with blackwall options as well as redline and RWL selections in certain series. It is the size to evaluate when the car already has 18-inch wheels and the goal is balancing fitment accuracy with the preferred appearance and performance character.
245/45R17 is a metric radial size with a 245-millimeter nominal section width, a 45-series profile, radial construction, and a 17-inch rim diameter. For the 2008 Audi TT Quattro, this size is one of the primary 3.2 fitments and keeps the decision centered on the correct 17-inch wheel package. Available tires include BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, with blackwall, redline, and RWL sidewall treatments depending on the series. This size is the one to compare when the car retains or uses 17-inch wheels and the buyer wants to sort through performance, appearance, and rim-width compatibility within that fitment.
255/35R19 is a metric radial size where 255 gives the nominal section width in millimeters, 35 is the aspect ratio, R means radial construction, and 19 is the wheel diameter in inches. On the 2008 Audi TT Quattro, this size is tied to the 3.2 S Line and represents the 19-inch fitment in this range. Available choices center on BFGoodrich g-Force series tires in blackwall form, with differences in series and supporting specifications rather than sidewall styling variety. This is the fitment to focus on when the car is an S Line on 19-inch wheels and the next step is comparing the available performance-oriented radial options.
Tire fitment on the 2008 Audi TT Quattro varies by sub-model, so identifying the exact version matters before choosing a tire. The 3.2 uses either a 17-inch or 18-inch fitment, while the 3.2 S Line moves to a 19-inch setup.
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2008 Audi TT Quattro 3.2
The 2008 Audi TT Quattro 3.2 uses radial tires and may be fitted with either a 17-inch or 18-inch wheel package, so wheel diameter needs to be confirmed before selection. Once that is settled, the choice shifts to comparing available tire series, sidewall styles, and rim-width compatibility within the correct size.
The 2008 Audi TT Quattro 3.2 S Line uses the 255/35R19 radial fitment, making this the sub-model with the dedicated 19-inch setup. Tire selection here is more straightforward, with the focus on choosing among the available blackwall performance series that match the existing wheel package.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2008 Audi TT Quattro Tires for Sale
Available 2008 Audi TT Quattro tires center on radial performance options from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. Depending on size, buyers can compare g-Force, NT555 G2, Drag Radial, and Street Pro III series, along with blackwall, redline, or RWL sidewall treatments.
These FAQs focus on the exact tire sizes used on the 2008 Audi TT Quattro, how fitment changes by sub-model and wheel diameter, and how to compare the available radial tire choices before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 2008 Audi TT Quattro?
The 2008 Audi TT Quattro uses three primary tire sizes: 245/45R17, 245/40R18, and 255/35R19. The 3.2 uses either 245/45R17 or 245/40R18, while the 3.2 S Line uses 255/35R19. All three are radial fitments tied to specific wheel diameters.
The practical step is confirming both the sub-model and the wheel diameter currently on the car before choosing a tire. A TT Quattro with changed wheels or a previous owner’s tire swap can easily appear similar while needing a different size, so reading the sidewall and checking the wheel setup is more reliable than guessing by appearance alone.
What size rim does a 2008 Audi TT Quattro use?
The 2008 Audi TT Quattro uses 17-inch, 18-inch, or 19-inch rims depending on the tire size and sub-model. The 245/45R17 fitment uses a 17-inch rim, the 245/40R18 fitment uses an 18-inch rim, and the 255/35R19 fitment uses a 19-inch rim.
Wheel diameter should be verified before any tire purchase because these sizes are not interchangeable across different rim diameters. It also helps to check wheel width against the tire being considered, especially on a car like the TT Quattro where performance-oriented fitment, aftermarket wheels, or styling changes can narrow the acceptable range.
Why does the 2008 Audi TT Quattro have more than one tire size?
More than one tire size appears on the 2008 Audi TT Quattro because fitment changes with sub-model and wheel package. The 3.2 uses either a 17-inch or 18-inch size, while the 3.2 S Line uses a 19-inch size. Each size corresponds to a different wheel diameter and profile combination.
That means the correct choice is determined by the car’s actual configuration, not simply by model name. A quick check of the current tire sidewall, wheel diameter, and sub-model badge usually settles the issue, and it is especially important if the car has been modified or if the original wheels were replaced at some point.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2008 Audi TT Quattro?
Start with the correct size, wheel diameter, and intended use. On a 2008 Audi TT Quattro, 245/40R18 is a radial fitment for the 3.2, and the available options vary by brand, series, sidewall treatment, rim-width specification, weight, and in some cases load information tied to inflation pressure.
Once the size is confirmed, compare whether the goal is a straightforward blackwall performance tire, a drag-oriented specialty tire, or a more appearance-driven choice such as redline or RWL. Matching the tire to the car’s existing 18-inch wheel width and the way the car is driven will usually narrow the field more effectively than choosing by brand alone.
What sidewall styles are available for 2008 Audi TT Quattro tires?
Sidewall style depends on the tire size chosen. Blackwall is available across all three primary sizes, while redline and RWL options appear in 245/40R18 and 245/45R17 through Pro-Trac Street Pro III tires. The 255/35R19 choices remain blackwall in the currently available product range.
That makes sidewall style part of the wheel-size decision as much as the tire decision. Buyers who want a more traditional accent or a custom look need to confirm that the preferred styling exists in the correct size first, then make sure the rest of the tire’s specifications still suit the car’s wheel width and intended use.
What brands offer tires for the 2008 Audi TT Quattro?
Tires for the 2008 Audi TT Quattro are available from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, depending on size. BFGoodrich appears across all three fitments, while Nitto, M&H Racemaster, and Pro-Trac are offered in the 245/45R17 and 245/40R18 sizes.
Brand alone does not settle the choice, because each size has its own mix of tire series, sidewall treatments, and wheel-width compatibility. It helps to narrow the search by the exact fitment first, then compare what each brand offers within that size, especially if the car has a specific appearance goal or a more specialized driving purpose.
Restoration & Appearance
Which tire should I choose for a period-style 2008 Audi TT Quattro?
A period-style approach on a 2008 Audi TT Quattro starts with the correct original-type fitment category for the sub-model and wheel diameter already on the car: 245/45R17, 245/40R18, or 255/35R19 radial tires. From there, the most appearance-sensitive choices usually come from sidewall treatment and tire series rather than construction type.
For a cleaner OEM-inspired presentation, blackwall tires keep the look restrained. Redline or RWL options in the 17-inch and 18-inch sizes introduce a more customized visual effect, so they suit a styling-driven build better than a restoration focused on preserving the TT’s original-era appearance.
Does correct tire fitment matter for a 2008 Audi TT Quattro restoration?
Correct tire fitment matters on a 2008 Audi TT Quattro restoration because the tire size affects wheel appearance, profile, and the overall stance of the car. Using the proper 17-inch, 18-inch, or 19-inch fitment for the actual sub-model keeps the proportions consistent with the way that version of the TT was equipped.
It also avoids avoidable fitment problems during a restoration project. A tire that suits the wrong wheel package can change the visual balance of the car and create clearance concerns, so the most useful approach is to confirm the sub-model, verify the wheels on the car, and then choose the sidewall style and series that support the intended finish.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2008 Audi TT Quattro?
Yes, modifications can affect tire fitment on a 2008 Audi TT Quattro. Aftermarket wheels, altered wheel width, offset changes, suspension lowering, or body modifications can all change the amount of clearance available for 245/45R17, 245/40R18, or 255/35R19 tires, even when the size itself is correct for the model range.
That is why the car’s current setup should be checked rather than assuming every TT Quattro still matches its original wheel package. Looking at steering clearance, inner fender space, and the actual wheel dimensions is especially important before mounting new tires on a car that has been customized or has had parts changed over time.
What should I inspect before driving a 2008 Audi TT Quattro on new tires?
Before driving a 2008 Audi TT Quattro on new tires, inspect the wheels for correct diameter and condition, verify that tire pressure is set appropriately, and make sure the tires have proper clearance at full steering lock and through suspension movement. It is also wise to confirm there are no obvious alignment or suspension issues.
A quick road-use check should include looking for rubbing, vibration, uneven ride behavior, or signs of air loss after installation. On a collector or occasionally driven car, it also helps to inspect the rest of the chassis for worn bushings, loose hardware, or brake issues so the new tires are not being asked to compensate for unrelated problems.
How often should tires on a 2008 Audi TT Quattro be inspected?
Tires on a 2008 Audi TT Quattro should be inspected regularly, with a visual check before normal driving and a more thorough inspection at routine service intervals or before a longer trip. The important points are tread condition, uneven wear, air pressure, cuts, bulges, and sidewall aging.
Cars that are driven less often deserve even closer attention because low annual mileage can hide age-related deterioration. Checking the tires after storage, watching for flat-spotting or pressure loss, and keeping the car away from prolonged heat, sunlight, and ozone sources can help preserve the tires between drives.
