The 2009 BMW 135i brought serious performance into a compact rear-wheel-drive coupe and convertible, giving the 1 Series a distinctly enthusiast-focused character. Its short wheelbase, strong turbocharged power, and sharp proportions make tire choice more than a routine maintenance decision. Standard fitment uses 205/50R17 radial tires, while sport-package and staggered setups move to 18-inch sizes with 215/40R18 in front and 245/35R18 in the rear. That creates a real choice between a square 17-inch arrangement and a staggered 18-inch presentation, along with differences in tire series, sidewall styling, and overall appearance. Before selecting a tire, confirm the exact wheel setup on the car, especially if it has been changed from stock-style sizing.
Which Tire Size Is Right for The 2009 BMW 135i
The 2009 BMW 135i uses three primary tire sizes across its covered configurations, and the right one depends first on the exact sub-model and wheel setup. Standard coupe and convertible applications use a 17-inch radial, while sport-package and staggered applications use 18-inch front and rear sizes. Before choosing a tire, confirm whether the car is on the standard 17-inch setup or the staggered 18-inch arrangement.
205/50R17 is a metric radial size in which 205 is the nominal section width in millimeters, 50 is the aspect ratio, R identifies radial construction, and 17 is the wheel diameter in inches. On the 2009 BMW 135i, this size is used on the standard 17-inch setup rather than the staggered sport-package arrangement. Available choices include Blackwall performance-oriented tires from BFGoodrich and Vredestein, along with an American Classic Radial with a 0.875-inch whitewall. This size is the one to evaluate when the car retains its non-sport wheel package or when a more uniform square setup is being maintained.
Fit(s): Convertible w/Sport Pkg. Front and Coupe Front
Construction: Radial|Rim: 18 in
215/40R18 is a metric radial size where 215 refers to nominal section width in millimeters, 40 is the aspect ratio, R means radial construction, and 18 identifies the wheel diameter. On the 2009 BMW 135i, this size serves as the front fitment on covered 18-inch applications rather than a universal size for every configuration. The available product is a Blackwall BFGoodrich g-Force Sport Comp 2, which places the emphasis on a modern performance-style presentation. This is the size to confirm when the car uses the front half of the staggered 18-inch setup and wheel diameter has already been verified.
Fit(s): Convertible w/Sport Pkg. Rear and Coupe Rear
Construction: Radial|Rim: 18 in
245/35R18 is a metric radial size with a 245-millimeter nominal section width, a 35-series aspect ratio, radial construction, and an 18-inch wheel diameter. On the 2009 BMW 135i, this size is used as the rear tire on covered staggered 18-inch applications, so it should be matched to the correct rear-wheel setup rather than treated as a standalone universal fitment. The available choice is a Blackwall BFGoodrich g-Force Phenom T/A. This rear size matters most when preserving the intended staggered look and confirming that both wheel width and rear clearance remain appropriate.
Tire fitment on the 2009 BMW 135i varies by configuration, so checking the exact sub-model matters before choosing a tire. The standard coupe and convertible use one 17-inch size, while the covered 18-inch applications split front and rear sizing across a staggered setup.
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2009 BMW 135i Convertible
The 2009 BMW 135i Convertible uses the standard 17-inch radial fitment rather than the staggered 18-inch sport-package arrangement. Tire selection here centers on choosing among available 205/50R17 options, including differences in brand, sidewall style, and overall appearance.
The 2009 BMW 135i Convertible w/Sport Pkg. Front uses the front half of the 18-inch staggered radial setup. Tire choice starts with confirming the front wheel size and then matching the correct 215/40R18 fitment to the car's sport-package configuration.
The 2009 BMW 135i Convertible w/Sport Pkg. Rear uses the wider rear portion of the 18-inch staggered radial setup. Selecting a tire here means confirming the rear wheel arrangement and keeping the 245/35R18 rear fitment aligned with the front sizing already on the car.
The 2009 BMW 135i Coupe uses the standard 17-inch radial fitment rather than the staggered 18-inch front and rear setup. That keeps tire selection focused on the available 205/50R17 choices and the balance between modern performance appearance and sidewall style.
The 2009 BMW 135i Coupe Front uses the front size from the 18-inch staggered radial arrangement. Choosing the right tire means confirming that the car is on the correct front sport-style wheel setup before selecting a 215/40R18 option.
The 2009 BMW 135i Coupe Rear uses the rear size from the 18-inch staggered radial arrangement. Tire selection should keep the rear 245/35R18 matched to the existing wheel setup and to the corresponding front sizing on the vehicle.
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 2009 BMW 135i Tires for Sale
Available 2009 BMW 135i tires are all radial designs, with choices from BFGoodrich, American Classic, and Vredestein. Depending on size, buyers can compare Blackwall performance-oriented series and, in 205/50R17, a Wide Whitewall option for a more distinctive appearance.
These FAQs focus on 2009 BMW 135i tire sizing, 17-inch versus 18-inch wheel fitment, staggered front-and-rear applications, product selection, appearance choices, and the checks worth making before putting a collector or enthusiast-driven car back on the road.
Tire Size & Fitment
What tire size fits a 2009 BMW 135i?
The 2009 BMW 135i uses 205/50R17 on standard coupe and convertible applications, while covered 18-inch staggered applications use 215/40R18 in front and 245/35R18 in the rear. All of these are radial tire sizes. That means there is not one universal size across every 135i configuration.
The first step is confirming whether the car has the standard 17-inch wheel setup or the staggered 18-inch arrangement. Many 135i cars have changed wheels over time, so checking the actual front and rear wheel diameters on the car matters more than assuming every coupe or convertible uses the same tire.
What size rim does a 2009 BMW 135i use?
The 2009 BMW 135i uses either a 17-inch or 18-inch rim, depending on configuration. The 205/50R17 size mounts on a 17-inch wheel, while the 215/40R18 and 245/35R18 sizes mount on 18-inch wheels. Covered staggered applications use the 18-inch sizes as separate front and rear fitments.
Wheel diameter should be confirmed before any tire is selected, and wheel width matters too when comparing products. A 135i that has aftermarket wheels, replacement rims, or a changed sport-package setup may no longer match the original-style arrangement, so measuring the actual wheels on the car is the safest starting point.
Why does the 2009 BMW 135i have more than one tire size?
The 2009 BMW 135i has more than one tire size because its covered configurations include both a standard 17-inch setup and a staggered 18-inch setup. In the staggered arrangement, the front and rear tires are different sizes: 215/40R18 up front and 245/35R18 at the rear. The standard setup uses 205/50R17.
That difference affects more than the tire label on the sidewall. It changes how the car should be matched front to rear, and it also changes the product choices available in each size. Before replacing anything, verify whether the car is meant to use the same size at all four corners or a staggered combination.
Choosing the Right Tire
What should I consider when choosing a 2009 BMW 135i tire?
Start with the exact tire size and wheel setup on the car. A 2009 BMW 135i may use 205/50R17 on a standard arrangement or a staggered 18-inch setup with 215/40R18 in front and 245/35R18 in the rear. Construction is straightforward because the available fitments here are radial tires.
Once the size is confirmed, compare the tire's intended character, sidewall style, rim-width compatibility, and any stated load figures that apply to the product. A square 17-inch setup leaves different selection choices than the 18-inch staggered layout, so product comparison should follow the actual wheel and tire arrangement already on the car.
What sidewall styles are available for 2009 BMW 135i tires?
Blackwall is the most common sidewall style available for the 2009 BMW 135i across its supported sizes. In 205/50R17, there is also a Wide Whitewall option through the American Classic Radial line. The 18-inch fitments shown here are available in Blackwall form.
That makes sidewall appearance part of the decision mainly on cars using the 17-inch size. A Blackwall usually keeps the look modern and understated, while a Wide Whitewall creates a more customized visual treatment. The right choice depends on how the car is being presented, not just the tire's basic dimensions.
What brands offer tires for the 2009 BMW 135i?
The 2009 BMW 135i tire selections shown here come from BFGoodrich, American Classic, and Vredestein. BFGoodrich appears across all three supported sizes, while American Classic and Vredestein are available in 205/50R17. Series represented include g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, American Classic Radial, and Sprint Plus.
Brand choice matters most after the correct size and wheel setup are confirmed. On the standard 17-inch fitment, there is more room to compare appearance and tire character, while the 18-inch front and rear sizes are more narrowly focused. The most useful comparison is between the options actually offered in the size the car uses.
Restoration & Appearance
Which tire should I choose for a period-style 2009 BMW 135i?
A period-style 2009 BMW 135i tire choice starts with keeping the correct size and wheel format for the car's actual configuration. Standard applications use 205/50R17, while sport-style staggered applications use 215/40R18 front and 245/35R18 rear. Those dimensions shape the car's stance and are the foundation of any era-appropriate presentation.
After that, the visual goal becomes more specific. A Blackwall tire keeps the appearance close to the modern performance language of the model, while the 205/50R17 Wide Whitewall option creates a custom look rather than a stock-style one. Anyone pursuing exact originality should compare tire appearance against marque references and period photography.
How does tire construction affect the appearance of a restored 2009 BMW 135i?
On the 2009 BMW 135i, construction does not create a bias-ply-versus-radial decision because the supported fitments here are radial tires. Appearance is influenced more by the correct size, wheel diameter, sidewall height, and sidewall styling than by switching between construction types. In practical terms, the visual difference comes from the setup itself.
A standard 205/50R17 arrangement presents differently from the lower-profile staggered 18-inch combination, even before brand or series is considered. Sidewall style also changes the final impression, especially when comparing Blackwall and Wide Whitewall offerings in 205/50R17. For restoration-minded owners, preserving the intended wheel-and-tire relationship is usually the most important appearance decision.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2009 BMW 135i?
Yes, modifications can affect tire fitment on a 2009 BMW 135i. Wheel changes, altered offsets, suspension lowering, replacement springs, and body modifications can all change how a 205/50R17, 215/40R18, or 245/35R18 tire sits in the wheel opening. That is especially important on the staggered 18-inch setup where front and rear sizing already differs.
A car that no longer uses its original-style wheels should be checked for wheel diameter, wheel width, front-to-rear matching, and steering or fender clearance before new tires are chosen. Even when the sidewall size looks familiar, an aftermarket wheel package can change the fitment requirements enough to make verification essential.
What should I inspect before driving a 2009 BMW 135i on new tires?
Before driving a 2009 BMW 135i on new tires, inspect the wheels for damage, confirm that the tire sizes match the car's actual setup, and check that the tires are mounted in the correct front and rear positions if the car uses the staggered 18-inch arrangement. Tire pressure should also be set correctly for the vehicle's intended use.
It also helps to look over alignment-related wear items and make sure there is no rubbing at full steering lock or under suspension compression. On an enthusiast car that may have seen wheel swaps or suspension changes, a short careful test drive is a smart final check before normal road use.
How often should tires on a 2009 BMW 135i be inspected?
Tires on a 2009 BMW 135i should be inspected regularly, not just when tread looks low. A quick visual check before drives and a closer inspection at routine service intervals helps catch uneven wear, sidewall damage, embedded debris, and slow air loss early. That matters on both the standard 17-inch setup and the staggered 18-inch arrangement.
Cars that are driven less often still need attention because age, storage conditions, and long stationary periods can affect tire condition. Looking at tread wear across the full width of the tire is especially useful on a performance-oriented car, since alignment issues or pressure drift can show up there before they become obvious on the road.
