The 2007 Mercedes-Benz CLK63 AMG blends the elegant proportions of the CLK coupe and cabriolet line with the harder-edged character AMG gave its V8 performance cars in the 2000s. That combination makes tire selection especially important, because this car depends on a staggered fitment rather than a single all-around size. The front uses 225/40R18 radial tires, while the rear uses 255/35R18 radials, both on 18-inch wheels. Available choices stay firmly in modern blackwall performance territory, with BFGoodrich and Nitto options across several series. For the right result, the key is matching the front and rear sizes correctly and confirming the wheel setup if the car has ever been modified.
Which Tire Size Is Right for The 2007 Mercedes-Benz CLK63 AMG
The 2007 Mercedes-Benz CLK63 AMG uses two primary tire sizes, both in radial construction on 18-inch wheels. This is a staggered setup, so the first step is confirming whether you are selecting a front or rear tire rather than treating the car as if it uses one size at all four corners. Once that is established, the real comparison becomes tire series, brand, rim-width compatibility, and how each option suits the car's intended road use.
225/40R18 is a metric radial size in which 225 identifies nominal section width in millimeters, 40 is the aspect ratio, R denotes radial construction, and 18 is the wheel diameter in inches. On the 2007 Mercedes-Benz CLK63 AMG, this size serves the front position and supports the car's staggered performance-oriented layout. Available choices include BFGoodrich and Nitto blackwall tires across series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. This is the size to evaluate when replacing the front tires and checking wheel-width compatibility against the tire you choose.
255/35R18 is a metric radial size where 255 is the nominal section width in millimeters, 35 is the aspect ratio, R indicates radial construction, and 18 identifies the wheel diameter in inches. On the 2007 Mercedes-Benz CLK63 AMG, this size is used at the rear, giving the car a wider back tire than the front. BFGoodrich and Nitto options are available here as well, all in blackwall form and spread across several performance-focused series. This is the size to confirm for rear replacement, especially if the car has aftermarket wheels or a changed suspension stance.
Fitment on the 2007 Mercedes-Benz CLK63 AMG is straightforward once the tire position is identified, because the covered front and rear applications each have their own dedicated size. Checking whether you are replacing a front or rear tire matters more here than comparing trim variations.
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2007 Mercedes-Benz CLK63 AMG Base Front
The Base Front application uses the smaller of the two staggered radial sizes fitted to this car. Tire selection here centers on maintaining the correct front fitment while comparing blackwall performance options, wheel-width compatibility, and overall setup if the wheels are not original.
The Base Rear application uses the wider rear radial size that completes the CLK63 AMG's staggered arrangement. Choosing the correct rear tire means keeping the front-to-rear size relationship intact and confirming wheel width and clearance before substituting any non-stock wheel setup.
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 Mercedes-Benz CLK63 AMG Tires for Sale
Available 18-inch radial choices for the 2007 Mercedes-Benz CLK63 AMG come from BFGoodrich and Nitto, with blackwall styling throughout. The main differences to compare in the product grid are tire series, front-versus-rear size, rim-width range, and related performance-oriented specifications.
Owners usually need to confirm the staggered front and rear sizes first, then sort through radial tire choices, wheel compatibility, and maintenance concerns. These FAQs focus on exact fitment for the 2007 Mercedes-Benz CLK63 AMG and the practical checks that matter before road use.
Tire Size & Fitment
What tire size fits a 2007 Mercedes-Benz CLK63 AMG?
The 2007 Mercedes-Benz CLK63 AMG uses a staggered tire setup with 225/40R18 at the front and 255/35R18 at the rear. Both are radial tires designed for 18-inch wheels, so this car does not use one identical size at all four corners.
That means tire selection starts with position on the car. A front replacement should stay with 225/40R18, while a rear replacement should stay with 255/35R18 unless the wheel and vehicle setup has been intentionally changed. On any modified car, check the actual wheel dimensions and clearance before assuming the original staggered arrangement is still in place.
What size rim does a 2007 Mercedes-Benz CLK63 AMG use?
Both primary tire sizes for the 2007 Mercedes-Benz CLK63 AMG are built around an 18-inch rim diameter. The front 225/40R18 and rear 255/35R18 sizes share that same wheel diameter even though the rear tire is wider and lower in profile.
Rim diameter is only part of the fitment picture, because wheel width also affects which tire can be used correctly. A car with replacement wheels may still have 18-inch rims but use widths that differ from the original setup, so it is worth confirming both diameter and width before choosing among the available front and rear tire options.
Why does the 2007 Mercedes-Benz CLK63 AMG have more than one tire size?
The 2007 Mercedes-Benz CLK63 AMG has more than one tire size because it uses a staggered fitment. The front position takes 225/40R18, while the rear uses 255/35R18, giving the car different tire widths front to rear rather than a square setup.
For the owner, that changes how replacements are planned. Tires cannot be selected as a single universal set unless the car has been converted to a different wheel arrangement. Matching the intended front and rear sizes matters for wheel compatibility and overall setup, so verify position carefully before replacing only one pair or rotating through new tire choices.
Choosing the Right Tire
What should I consider when choosing a tire for a 2007 Mercedes-Benz CLK63 AMG?
Start with the correct position-specific size, since the 2007 Mercedes-Benz CLK63 AMG uses 225/40R18 in front and 255/35R18 in back. From there, compare radial tire series, wheel-width compatibility, load figures where stated, and whether you want a more all-season-oriented or more performance-focused option.
The available choices come from BFGoodrich and Nitto, and all are blackwall radials, so the main differences are in series character and fitment details rather than sidewall appearance. It also helps to think about how the car is used, whether for fair-weather cruising, spirited weekend driving, or more routine road use, before narrowing the field.
What brands offer tires for the 2007 Mercedes-Benz CLK63 AMG?
Tires for the 2007 Mercedes-Benz CLK63 AMG are available from BFGoodrich and Nitto in the two required 18-inch sizes. Across the front and rear fitments, the available product range includes several BFGoodrich g-Force series options along with the Nitto NT555 G2.
Brand choice should be considered alongside the exact tire size and the specific series you are comparing. Since this car uses different front and rear sizes, it is also smart to make sure the same general style of tire is being chosen across both positions so the staggered setup remains consistent in appearance and intended use.
What tire series are available for the 2007 Mercedes-Benz CLK63 AMG?
The available tire series for the 2007 Mercedes-Benz CLK63 AMG include BFGoodrich g-Force Comp 2 AS, BFGoodrich g-Force Sport Comp 2, BFGoodrich g-Force Phenom T/A, and the Nitto NT555 G2. These series appear across the 225/40R18 front and 255/35R18 rear fitments.
Series selection matters because it helps separate one tire's character from another even when the size is the same. Once the correct front or rear size is confirmed, compare the series with attention to wheel-width suitability, stated load figures where available, and whether you are trying to preserve a matched look and feel across the car's staggered setup.
Restoration & Appearance
Which tire should I choose for a period-style 2007 Mercedes-Benz CLK63 AMG?
A period-style approach for a 2007 Mercedes-Benz CLK63 AMG starts with preserving the original staggered sizing concept: 225/40R18 in front and 255/35R18 in the rear. Since the available choices are all blackwall radials, the visual character stays close to the modern performance look this AMG-era Mercedes was designed around.
The next decision is less about whitewall or vintage styling and more about selecting a tire series that suits how the car will be used and presented. On a car kept close to its original specification, matching the proper front and rear relationship usually matters more than chasing an appearance change that does not fit the CLK63 AMG's design era.
Does correct tire fitment matter for a 2007 Mercedes-Benz CLK63 AMG restoration?
Correct tire fitment matters on a 2007 Mercedes-Benz CLK63 AMG because the car's appearance and stance depend on its staggered 18-inch setup. Keeping the proper front and rear sizes helps preserve the proportions the car was designed around, rather than giving it a mismatched or improvised look.
That is especially important on a restoration-minded car that may be judged as much by details as by major components. Even when the goal is road use rather than show presentation, checking the actual wheel dimensions and avoiding casual substitutions helps maintain both the visual balance and the intended fitment relationship between the front and rear tires.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2007 Mercedes-Benz CLK63 AMG?
Yes, modifications can affect tire fitment on a 2007 Mercedes-Benz CLK63 AMG even when the car still uses 18-inch wheels. Aftermarket wheels, suspension changes, altered ride height, or body modifications can all change how the original 225/40R18 front and 255/35R18 rear sizes sit in the wheel openings.
That makes it important to inspect the actual setup before ordering replacements. A changed wheel width or offset may influence clearance at the fender, suspension, or steering components, especially on the wider rear tire. Checking what is physically on the car now is more useful than assuming every CLK63 AMG still matches its original wheel arrangement.
What should I inspect before driving a 2007 Mercedes-Benz CLK63 AMG on new tires?
Before driving a 2007 Mercedes-Benz CLK63 AMG on new tires, inspect tire pressure, bead seating, lug torque, visible sidewall condition, and basic clearance at both the front and rear positions. Because the car uses different sizes front and rear, it is also worth confirming that the new tires were mounted in the correct locations.
A short, careful road test is the right next step. Pay attention to rubbing, vibration, pull, or any sign that a wheel, alignment, or suspension issue was already present before the tire change. On a lower-use performance car, it also makes sense to recheck pressure after the first drive rather than assuming initial inflation remains unchanged.
How often should tires on a 2007 Mercedes-Benz CLK63 AMG be inspected?
Tires on a 2007 Mercedes-Benz CLK63 AMG should be inspected regularly, not only by mileage but also by time, because many cars in this category see seasonal or low annual use. Look over tread wear, air loss, cuts, bulges, and sidewall aging on both the 225/40R18 front tires and the 255/35R18 rear tires.
A monthly visual check is a sensible routine, with another inspection before any longer drive or after the car has been stored. Uneven wear can point to alignment or suspension concerns, while a pressure change can signal a leak or wheel issue. Consistent inspection is especially important on a performance car with a staggered setup.
