The 2013 BMW 135is sits at the sharp end of the E82 and E88 1 Series range, blending compact BMW proportions with the kind of rear-wheel-drive balance that keeps these cars appealing to enthusiasts. Whether in Coupe or Convertible form, it is a performance-focused car that depends on a staggered tire setup rather than a one-size-fits-all fitment. This BMW uses 215/40R18 up front and 245/35R18 at the rear, both in radial construction on 18-inch wheels. Available choices center on BFGoodrich blackwall performance radials in distinct g-Force series. The key is matching front and rear sizes correctly and confirming wheel specifications before replacement.
Which Tire Size Is Right for The 2013 BMW 135is
The 2013 BMW 135is uses two primary tire sizes, with 215/40R18 at the front and 245/35R18 at the rear. Both are radial fitments on 18-inch rims, so the first step is confirming whether you are replacing the front pair or the rear pair. Once position is clear, the decision shifts to selecting the right performance-oriented tire within the correct size and wheel-width range.
215/40R18 is a metric radial size in which 215 identifies the nominal section width in millimeters, 40 is the aspect ratio, R indicates radial construction, and 18 is the wheel diameter in inches. On the 2013 BMW 135is, this size is used at the front, where steering response and proper staggered balance matter. In this size, BFGoodrich offers a blackwall g-Force Sport Comp 2 tire. Choosing this front size correctly helps preserve the intended front-to-rear relationship, so it is important to confirm wheel width and avoid mixing up front and rear replacements.
245/35R18 is a metric radial size with a 245-millimeter nominal section width, a 35-series profile, radial construction, and an 18-inch rim diameter. On the 2013 BMW 135is, this is the rear tire size, giving the car the wider rear fitment that belongs with its staggered setup. BFGoodrich offers this size in a blackwall g-Force Phenom T/A series. The main reason to evaluate this size carefully is to maintain the correct rear fitment and make sure the wheel width matches the tire's intended mounting range.
Fitment on the 2013 BMW 135is is straightforward in one sense and specific in another: Coupe and Convertible models share the same staggered layout, but front and rear sizes are different. Checking the exact position on the car matters more than choosing between body styles.
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2013 BMW 135is Convertible Front
The 2013 BMW 135is Convertible Front uses the narrower front fitment in radial construction on an 18-inch wheel. Tire selection here centers on preserving the proper front half of the staggered setup and confirming the wheel matches the tire's mounting range.
The 2013 BMW 135is Convertible Rear uses the wider rear tire size, also in radial construction on an 18-inch wheel. That means replacement should focus on maintaining the correct rear fitment rather than treating all four tire positions as interchangeable.
The 2013 BMW 135is Coupe Front uses the same front tire size as the Convertible Front, keeping fitment consistent across body styles. The main selection point is staying with the correct front size and verifying wheel width before mounting a replacement tire.
The 2013 BMW 135is Coupe Rear uses the same wider rear tire size as the Convertible Rear. That makes body style less important than tire position, since the rear axle requires its own specific fitment within the staggered arrangement.
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 2013 BMW 135is Tires for Sale
Available 2013 BMW 135is tire choices focus on the two staggered 18-inch sizes, with BFGoodrich blackwall performance radials in the g-Force Sport Comp 2 and g-Force Phenom T/A series. The main comparisons are front-versus-rear size, tire series, and compatible wheel-width range.
Tire questions for the 2013 BMW 135is usually come down to its staggered front and rear sizes, 18-inch wheel fitment, product selection, and the checks worth making before road use on a performance-oriented BMW.
Tire Size & Fitment
What tire size fits a 2013 BMW 135is?
The 2013 BMW 135is uses a staggered tire setup with 215/40R18 on the front and 245/35R18 on the rear. Both are radial tire sizes mounted on 18-inch wheels, and the same front-to-rear arrangement applies across the covered Coupe and Convertible positions.
That means tire replacement starts with identifying where the tire goes on the car, not just the year and model. A 135is should not be treated like a square four-corner setup unless the vehicle has been changed from its original wheel and tire arrangement, so checking the actual wheel position is essential before choosing a replacement.
What size rim does a 2013 BMW 135is use?
The 2013 BMW 135is uses 18-inch rims with both of its primary tire sizes. The front 215/40R18 and rear 245/35R18 share the same rim diameter, even though the tires themselves differ in width and profile as part of the staggered setup.
Rim diameter is only one part of fitment, so it is still important to confirm wheel width before mounting a new tire. The available products in these sizes have different approved wheel-width ranges, and a wheel that is 18 inches in diameter can still be wrong for the tire if width or previous modifications have changed the setup.
Do all 2013 BMW 135is sub-models use the same tire size?
Coupe and Convertible versions of the 2013 BMW 135is share the same overall tire arrangement, but they do not use one identical size at every corner. Front positions use 215/40R18, while rear positions use 245/35R18, so the fitment is consistent by axle rather than universal across all four wheels.
That distinction matters when replacing two tires instead of a full set. A buyer needs to confirm whether the tire is for the front or rear axle, because the correct size follows vehicle position first. On a car with aftermarket wheels, it is wise to verify the actual setup visually instead of assuming it remains unchanged.
Choosing the Right Tire
What should I consider when choosing a tire for a 2013 BMW 135is?
Start with the correct axle-specific size, since the 2013 BMW 135is uses 215/40R18 in front and 245/35R18 in the rear. Both positions use radial construction on 18-inch rims, so the main considerations are proper size, compatible wheel width, tire series, and the kind of road use the car sees.
Available choices are performance-oriented BFGoodrich blackwall radials, which keeps appearance simple and modern while shifting the decision toward fitment and series selection. It also helps to compare maximum load capacity, product weight, and whether the car still has its original wheel setup, especially if it has been modified since new.
What brands offer tires for the 2013 BMW 135is?
BFGoodrich is the available brand for the 2013 BMW 135is in these covered sizes. The front 215/40R18 and rear 245/35R18 are offered in different BFGoodrich g-Force series, giving the car position-specific choices within one performance-focused brand family.
That makes the selection process more about choosing the right size and series for each axle than comparing several manufacturers. Matching the correct front and rear fitment remains the priority, and buyers should still review wheel-width compatibility and product specifications rather than assuming any 18-inch performance tire belongs on every 135is wheel.
What tire series are available for the 2013 BMW 135is?
The available tire series for the 2013 BMW 135is are BFGoodrich g-Force Sport Comp 2 in 215/40R18 for the front and BFGoodrich g-Force Phenom T/A in 245/35R18 for the rear. Both are blackwall radial performance tires built around the car's staggered 18-inch fitment.
Since the series differ by axle size, the practical choice is not between two front tires or two rear tires in the same size. The better approach is to confirm which position needs replacement, then compare the applicable product details for that size, including load figure, wheel-width range, and the existing setup on the car.
Restoration & Appearance
Which tire should I choose for a period-style 2013 BMW 135is?
A period-style approach for a 2013 BMW 135is starts with preserving its staggered 18-inch fitment, using 215/40R18 at the front and 245/35R18 at the rear. Since the available products are blackwall radial performance tires, the visual presentation stays in line with the clean, modern look expected on a late analog BMW sport coupe or convertible.
Appearance on a car of this era is shaped more by proper sizing and stance than by whitewall or redline sidewall treatment. Keeping the front and rear sizes correct helps the car look properly set up, and owners pursuing an especially exact presentation should verify the wheel and tire combination already on the vehicle before making changes.
Does correct tire fitment matter for a 2013 BMW 135is restoration?
Correct tire fitment matters on a 2013 BMW 135is because the car uses a staggered arrangement, not the same tire size at all four corners. Staying with the proper 215/40R18 front and 245/35R18 rear sizing helps preserve the appearance, stance, and intended relationship between the front and rear wheels.
A restoration-minded owner should also pay attention to wheel width and the possibility of prior modifications. Cars from this era are often changed with aftermarket wheels or suspension parts, and those changes can alter how the tire sits in the wheel opening even when the rim diameter remains 18 inches.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2013 BMW 135is?
Yes, modifications can affect tire fitment on a 2013 BMW 135is even when the car still uses 18-inch wheels. Lowering springs, suspension changes, aftermarket wheel widths, and offset changes can all influence how 215/40R18 front and 245/35R18 rear tires sit relative to fenders, struts, and steering components.
That is why the actual wheel and suspension setup should be checked before replacing tires on a modified car. A tire that suits the original staggered arrangement may need additional clearance review if the vehicle has been lowered or fitted with non-stock wheels, especially at the front where steering movement adds another variable.
What should I inspect before driving a 2013 BMW 135is on new tires?
Before driving a 2013 BMW 135is on new tires, inspect the wheel size and position to confirm the correct front and rear fitment, then check inflation pressure, valve stems, and lug torque. A quick visual review for rubbing points, uneven suspension wear, or damage around the wheel openings is also worthwhile.
On a staggered car, it helps to make sure the front pair and rear pair have not been mixed during installation. After the first drive, recheck for air loss and any signs of contact under steering or suspension movement, since fresh tires can reveal clearance issues that were masked by old or worn rubber.
How should tires on a 2013 BMW 135is be maintained?
Tires on a 2013 BMW 135is should be maintained with regular pressure checks, routine visual inspection, and attention to tread wear across both axles. Because the car uses different front and rear sizes, maintenance also means monitoring each axle separately rather than expecting wear patterns or replacement timing to be identical.
It is smart to watch for cracking, cuts, bulges, and gradual air loss, especially on a car that may see seasonal or weekend use. Since front-to-rear rotation is not part of a staggered setup like this, alignment condition becomes more important, and any unusual wear should be addressed before it shortens the life of a replacement tire.
