The 2007 Mazda RX-8 stands apart from typical sport coupes of its era, combining compact dimensions, rear-wheel-drive balance, and the distinctive character that made the rotary-powered RX line so appealing to enthusiasts. Tire choice matters on this car because wheel and trim configuration can change the fitment. The 2007 Mazda RX-8 uses radial tires in either 225/45R18 or 225/55R16, depending on sub-model. Available choices focus on blackwall performance-oriented radial designs from BFGoodrich and Nitto across several g-Force and NT555 series options. The right selection starts with confirming the exact sub-model and wheel diameter, then matching the tire's character to restoration-minded upkeep or regular road use.
Which Tire Size Is Right for The 2007 Mazda RX-8
The 2007 Mazda RX-8 uses two primary tire sizes, and the correct one depends on sub-model and wheel diameter. Some versions use 225/45R18 on an 18-inch rim, while certain Sport A/T applications can also use 225/55R16 on a 16-inch rim. Before choosing a tire, confirm the exact sub-model and the wheel diameter currently on the car, especially if the vehicle has been changed from its original wheel setup.
Fit(s): Grand Touring, Sport A/T, Sport M/T, and Touring
Construction: Radial|Rim: 18 in
A 225/45R18 tire uses a 225-millimeter nominal section width, a 45-series aspect ratio, radial construction, and an 18-inch rim. On the 2007 Mazda RX-8, this is the more performance-focused fitment and it appears across Grand Touring, Sport M/T, Touring, and some Sport A/T applications. Available choices include blackwall radial designs from BFGoodrich and Nitto in series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This size is the right place to focus if your RX-8 has 18-inch wheels and you want to stay with the intended low-profile tire presentation.
A 225/55R16 tire keeps the same nominal 225-millimeter width but uses a taller 55-series profile on a 16-inch rim, still in radial construction. On the 2007 Mazda RX-8, this size is associated with Sport A/T fitment and should not be assumed across the full model range. Available options center on BFGoodrich blackwall performance radials in the g-Force Comp 2 AS and g-Force Sport Comp 2 lines. This size is worth considering only after confirming that the car actually carries the matching 16-inch wheel setup, since rim diameter is the deciding factor.
Sub-model fitment is not completely uniform on the 2007 Mazda RX-8, so trim identification matters before selecting tires. Most covered versions use the same 18-inch radial fitment, but Sport A/T can involve a second size tied to a different wheel diameter.
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2007 Mazda RX-8 Grand Touring
The 2007 Mazda RX-8 Grand Touring uses the 225/45R18 radial tire size. Tire selection here is mainly about choosing among available blackwall performance radial options while keeping the 18-inch wheel fitment in line with the car's existing setup.
The 2007 Mazda RX-8 Sport A/T is the sub-model that requires the closest fitment check because it can use either 225/45R18 or 225/55R16 radial tires. Wheel diameter should be confirmed first, then the tire can be narrowed by profile, rim-width compatibility, and the type of road use the car will see.
The 2007 Mazda RX-8 Sport M/T uses the 225/45R18 radial size. Once the 18-inch wheel is confirmed, the decision shifts to comparing available blackwall radial offerings by series, load-related specifications, and overall performance-oriented character.
The 2007 Mazda RX-8 Touring uses the 225/45R18 radial tire size. That keeps fitment straightforward, so the main choice becomes selecting the right blackwall radial product for the car's current wheels, condition, and intended use.
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 2007 Mazda RX-8 Tires for Sale
Available 2007 Mazda RX-8 tire choices center on radial blackwall performance tires. Across 225/45R18 and 225/55R16 sizes, BFGoodrich and Nitto options vary by series, rim-width compatibility, weight, and load-related specifications, giving buyers a useful range of modern performance-oriented replacements.
These 2007 Mazda RX-8 tire FAQs focus on the two correct sizes, sub-model and wheel-diameter differences, product selection, and the fitment and maintenance checks that matter before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 2007 Mazda RX-8?
The 2007 Mazda RX-8 uses two radial tire sizes: 225/45R18 and 225/55R16. The correct size depends on the sub-model and wheel package. Grand Touring, Sport M/T, and Touring use 225/45R18, while Sport A/T can use either 225/45R18 or 225/55R16.
The important next step is checking the actual wheel diameter on the car before ordering tires. An RX-8 that now wears aftermarket wheels or a changed wheel package may not match the size expected from the trim name alone. Confirm the sub-model, measure the wheel diameter, and make sure the tire size matches the wheel currently installed.
What size rim does a 2007 Mazda RX-8 use?
A 2007 Mazda RX-8 uses either a 16-inch or 18-inch rim, depending on the tire size and sub-model configuration. The 225/45R18 fitment uses an 18-inch wheel, while the 225/55R16 fitment uses a 16-inch wheel.
That difference matters because tire diameter, sidewall profile, and wheel compatibility all start with the rim size. A 16-inch tire cannot be mounted on an 18-inch wheel, and the reverse is also true. Before comparing brands or tire series, verify the wheel size stamped on the rim or measure it directly so the RX-8 gets the correct fitment.
Why does the 2007 Mazda RX-8 have more than one tire size?
The 2007 Mazda RX-8 has more than one tire size because fitment varies by sub-model and wheel setup. Most covered versions use 225/45R18, but the Sport A/T can also use 225/55R16. Both are radial sizes, yet they are built around different wheel diameters and tire profiles.
That means the first decision is not brand or tread style but identifying the exact sub-model and confirming which wheels are on the car now. A previous owner may have changed wheels, and some RX-8s no longer match their original configuration. Matching the tire to the current wheel diameter and intended setup prevents a costly mistake.
Choosing the Right Tire
What should I consider when choosing a 225/45R18 tire for a 2007 Mazda RX-8?
Start with the basics: the tire must be 225/45R18 radial and appropriate for an 18-inch wheel. From there, compare the available blackwall choices by brand, tire series, rim-width range, weight, and load-related specifications. BFGoodrich and Nitto both offer options in this size for the RX-8.
A useful next step is matching the tire's character to how the car is driven. Some owners want a modern performance-oriented street tire, while others simply want a sound replacement that preserves the car's low-profile look. Check the wheel width against the tire's approved range and make sure the overall setup still clears suspension and bodywork.
What brands offer tires for the 2007 Mazda RX-8?
The available tire brands for the 2007 Mazda RX-8 are BFGoodrich and Nitto. In 225/45R18, both brands are represented, while 225/55R16 choices center on BFGoodrich. These are modern radial, blackwall offerings rather than vintage-style collector tires.
Brand alone should not be the only deciding factor. The better approach is to begin with the correct size and wheel diameter, then compare the available series within that size. On an RX-8, profile, wheel compatibility, and intended use matter just as much as the name on the sidewall, especially when selecting between 16-inch and 18-inch fitments.
What tire series are available for the 2007 Mazda RX-8?
The 2007 Mazda RX-8 is covered by several modern radial tire series, including BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Sport Comp 2, BFGoodrich g-Force Phenom T/A, and Nitto NT555 G2. Availability depends on whether the car uses 225/45R18 or 225/55R16.
Series names help separate the product grid into meaningful choices, but they still need to be matched to the correct fitment. A 225/45R18 RX-8 has the broadest selection, while 225/55R16 choices are narrower. Compare the series after confirming rim diameter, then look at rim-width compatibility, weight, and load-related details to narrow the field.
Restoration & Appearance
Which tire should I choose for a period-style 2007 Mazda RX-8?
A period-style 2007 Mazda RX-8 should begin with the correct modern radial size for the sub-model and wheel setup: 225/45R18 or 225/55R16. Since the available choices are blackwall radials, the appearance stays in line with the car's original-era performance look rather than shifting toward a vintage collector-tire presentation.
The best visual result usually comes from keeping the correct wheel diameter and tire profile for the exact trim. On this car, a low-profile 225/45R18 creates a different stance than a 225/55R16 on a 16-inch wheel. Buyers focused on originality should also compare wheel style, ride height, and any prior modifications before deciding on the final tire.
Does correct tire fitment matter for a 2007 Mazda RX-8 restoration?
Correct tire fitment matters on a 2007 Mazda RX-8 restoration because the tire size affects both the appearance and the way the car sits on its wheels. Using the proper 225/45R18 or 225/55R16 radial size for the right sub-model keeps the proportions closer to the car's intended presentation.
A restoration-minded buyer should look beyond tread alone and confirm wheel diameter, wheel width, and whether the suspension has been altered over time. Even on a relatively modern enthusiast car, the wrong size can change the visual balance noticeably. Matching the tire to the trim and wheel setup is one of the simplest ways to keep the finished car coherent.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2007 Mazda RX-8?
Yes, modifications can affect tire fitment on a 2007 Mazda RX-8. Aftermarket wheels, altered offsets, suspension changes, lowering, or body modifications can all change how much room a 225/45R18 or 225/55R16 tire has around the fenders and steering components.
An RX-8 with changes from stock should be checked as an actual physical setup, not just by trim name. Verify wheel diameter and width first, then look at clearance at full steering lock and through suspension travel. A tire that matches the nominal size still needs to suit the wheel and chassis configuration currently on the car.
What should I inspect before driving a 2007 Mazda RX-8 on new tires?
Before driving a 2007 Mazda RX-8 on new tires, inspect the wheels for damage, confirm the tire size matches the wheel diameter, and check that inflation is set correctly for the installed tires. It is also smart to look over alignment condition, valve stems, and the general state of the suspension and steering components.
A short test drive should include listening for rubbing, feeling for vibration, and verifying that the car tracks properly. Recheck pressure after the tires have settled and confirm there is no unusual contact at the fenders or inner wheel wells. On a sporty chassis like the RX-8, small fitment issues tend to show up quickly once the car is driven.
How often should tires on a 2007 Mazda RX-8 be inspected?
Tires on a 2007 Mazda RX-8 should be inspected regularly, not only by mileage but also by time and storage conditions. A car that sees occasional use can develop sidewall cracking, flat spotting, air loss, or age-related deterioration even when the tread still looks usable.
Monthly pressure checks are a sensible baseline, along with visual inspections for cuts, bulges, uneven wear, and embedded debris. Any RX-8 that sits for extended periods deserves extra attention before returning to the road. Looking at the tires before longer drives helps catch condition issues early and confirms that the fitment still suits the car's current wheels.
