The 2007 Avanti carries one of American motoring’s most unusual revived nameplates, blending low-production specialty-car character with contemporary grand-touring proportions. Buyers looking at one today are usually balancing collector interest with the realities of maintaining a hand-built modern classic. Tire fitment is straightforward in construction but staggered by position, with a 245/40R18 front and 275/40R18 rear, both in radial form on 18-inch wheels. That opens the door to choices in blackwall, redline, and raised white letter presentation, along with several modern performance-oriented series. The key is preserving the intended front-to-rear relationship while matching the car’s actual wheel setup and use.
Which Tire Size Is Right for The 2007 Avanti
The 2007 Avanti uses two primary tire sizes, and the difference is positional rather than trim-based: 245/40R18 in front and 275/40R18 in the rear. Both are radial tires for 18-inch wheels, so the first step is confirming which axle you are buying for and making sure the car still has its correct staggered wheel-and-tire setup.
In 245/40R18, the 245 is the nominal section width in millimeters, 40 is the aspect ratio, R identifies radial construction, and 18 is the wheel diameter in inches. On the 2007 Avanti, this is the front tire size and reflects the car’s modern low-profile performance fitment. Available choices include blackwall offerings from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, plus redline and RWL versions in the Pro-Trac Street Pro III series. This size is the one to evaluate when you want to preserve steering balance up front while still choosing the sidewall look and tire character that suits the car.
In 275/40R18, the 275 indicates a wider nominal section width in millimeters, 40 is the aspect ratio, R means radial, and 18 is the rim diameter in inches. On the 2007 Avanti, this is the rear tire size and works with the front 245/40R18 in a staggered arrangement. Choices here include blackwall performance tires from BFGoodrich and Nitto, along with Pro-Trac Street Pro III options in redline and RWL form. This is the size to confirm carefully if rear wheels have ever been changed, since appearance, wheel width, and axle-specific fitment all matter at the back of the car.
Sub-model fitment on the 2007 Avanti is position-specific rather than a matter of separate trim packages. Checking whether you are replacing the front or rear tire matters most, because the car uses a staggered radial setup with different sizes at each end.
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2007 Avanti Base Front
The 2007 Avanti Base Front uses the narrower of the two primary radial sizes, intended for the front axle on an 18-inch wheel. Tire selection here centers on preserving the car’s staggered setup while choosing among blackwall, redline, or raised white letter styles where available.
The 2007 Avanti Base Rear uses the wider rear radial size on an 18-inch wheel, giving the car its intended front-to-rear tire relationship. Choosing the rear tire means confirming the wheel dimensions at the back and deciding whether a blackwall or more appearance-driven sidewall treatment suits the car.
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 Avanti Tires for Sale
Available 2007 Avanti tires span the front 245/40R18 and rear 275/40R18 sizes in radial construction from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac. The product grid is most useful for comparing blackwall, redline, and RWL sidewalls along with series such as g-Force, NT555 G2, Drag Radial, and Street Pro III.
Common 2007 Avanti tire questions usually come down to front-versus-rear sizing, 18-inch wheel fitment, radial product choices, sidewall appearance, and what to inspect before road use on a low-production specialty car.
Tire Size & Fitment
What tire size fits a 2007 Avanti?
The 2007 Avanti uses a staggered tire setup with 245/40R18 on the front and 275/40R18 on the rear. Both are radial sizes designed for 18-inch wheels, so there is not one universal tire size used at all four corners.
That means the first step is confirming whether you are replacing a front tire, a rear tire, or a full set. It is also worth checking that the car still has its intended wheel arrangement, since changes to wheel width or aftermarket replacements can affect which of these two sizes remains appropriate.
What size rim does a 2007 Avanti use?
Both primary tire sizes for the 2007 Avanti mount on 18-inch wheels. The front 245/40R18 and rear 275/40R18 share the same rim diameter, even though the rear tire is wider than the front.
Rim diameter is only part of the fitment picture, so wheel width should also be checked before choosing among available tires. That matters even more on a staggered setup, because the front and rear wheels may differ in width while still using the same 18-inch diameter.
Why does the 2007 Avanti have more than one tire size?
The two tire sizes on the 2007 Avanti reflect a staggered setup, with one size assigned to the front axle and a wider size assigned to the rear. This is different from a same-size arrangement where all four tires match.
For the buyer, that makes axle position more important than trim level when selecting tires. Keeping the front and rear sizes in their proper locations helps preserve the car’s intended visual stance and wheel-to-tire relationship, while any change from that setup should be checked carefully for wheel compatibility and clearance.
Choosing the Right Tire
What should I consider when choosing a 245/40R18 tire for a 2007 Avanti?
A 245/40R18 for the 2007 Avanti should first match the car’s front axle fitment and 18-inch wheel setup. From there, the main differences are brand, tire series, sidewall style, rim-width suitability, and whether you want a standard blackwall presentation or something more appearance-oriented like redline or RWL.
Front tires influence how the car looks and feels at the steering end, so it helps to compare the wheel width on the car against the tire’s intended fitment range where that information is available. Buyers also often want the front tires to complement the rear pair in both appearance and overall tire character.
What sidewall styles are available for 2007 Avanti tires?
Sidewall choices for the 2007 Avanti include blackwall, redline, and RWL, depending on the tire size and product line. Blackwall is the most common presentation across both the 245/40R18 front and 275/40R18 rear sizes, while Pro-Trac Street Pro III also offers redline and raised white letter options.
That gives the car owner some flexibility between a more understated modern look and a more stylized performance appearance. Sidewall treatment does not change the need to keep the correct front and rear sizes in place, so appearance should be chosen only after the axle position and wheel setup are confirmed.
What brands offer tires for the 2007 Avanti?
Tires for the 2007 Avanti are available from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster, depending on size and intended use. The available series include g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, Nitto NT555 G2, Street Pro III, and an M&H Drag Radial offering.
Those choices give the buyer a mix of modern performance-oriented blackwall tires and more visual statement pieces like redline or RWL styles. The better comparison is not brand prestige, but which product matches the correct axle size, the car’s wheel dimensions, and the balance between appearance and road-use priorities.
Restoration & Appearance
Which tire should I choose for a period-style 2007 Avanti?
A period-style approach for a 2007 Avanti still starts with the car’s actual staggered fitment: 245/40R18 in front and 275/40R18 in the rear. Within those sizes, Pro-Trac Street Pro III options in redline or RWL can create a more distinctive, custom-performance look than a standard blackwall tire.
Because this is a modern-era specialty car rather than an early restoration vehicle, appearance choice often comes down to the look you want the car to project. Matching the front and rear sidewall theme matters just as much as choosing the right sizes, and marque-specific photos or ownership history can help guide a restoration-minded decision.
How does tire construction affect the appearance of a restored 2007 Avanti?
On the 2007 Avanti, construction is less of an appearance question than on an older collector car because the primary fitment is already radial. The visible difference usually comes more from the sidewall treatment and tire series than from choosing between radial and bias-ply construction.
That makes the restoration-oriented decision more about presentation than construction type. A blackwall tire keeps the look restrained and contemporary, while redline or RWL can lean into the car’s specialty performance personality, provided the correct front and rear sizes remain in place and the wheel setup still supports them.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2007 Avanti?
Yes, modifications can affect tire fitment on a 2007 Avanti even when the original sizes are known. Aftermarket wheels, different wheel widths, suspension changes, ride-height adjustments, or body alterations can all change how a 245/40R18 front or 275/40R18 rear tire sits on the car.
That is especially important on a staggered setup, where front and rear tires already serve different positions. Any car with non-original wheels or chassis changes should have wheel width, tire clearance, and steering or suspension movement checked carefully before settling on a replacement tire choice.
What should I inspect before driving a 2007 Avanti on new tires?
Before driving a 2007 Avanti on new tires, inspect the wheels for damage, confirm lug hardware condition, and make sure the front and rear sizes are installed in their correct positions. It also helps to check tire pressure, valve stems, and basic clearance around the suspension, inner fenders, and bodywork.
A short, careful road test can reveal rubbing, vibration, or alignment issues before the car is driven farther. Specialty cars that see limited use also deserve a quick look at brake condition and suspension wear, since new tires cannot compensate for mechanical issues that affect how the car tracks and rides.
How often should tires on a 2007 Avanti be inspected?
Tires on a 2007 Avanti should be inspected regularly, with an extra look before longer drives or after periods of storage. Low-use collector and specialty cars can age their tires without adding many miles, so tread depth alone does not tell the whole story.
A useful routine is checking for cracking, bulges, cuts, uneven wear, and slow air loss while also confirming that the front and rear tires remain matched to their proper axle positions. Cars stored near heat sources, sunlight, or ozone-producing equipment deserve even closer attention because sidewall aging can develop quietly.
