F8x M3 & M4 Wheel & Tire Fitment Guide

Bolt Pattern

5x120

Thread Pitch

M14 x 1,25

Center Bore

72.56

Available Models

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APEX EC-7

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APEX SM-10

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Konig Hypergram

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Konig Ampliform

Vehicle Covered in this Guide:


2015-present F80 M3 & F82 M4. Fitment is identical between all years and models.

Chassis Introduction
The F8x M3 and M4 are factory equipped with one of two brake setups. Look for the colored dots to determine if a specific setup will clear your brakes.

 

Brake Clearance Indicators
SB = Standard brakes: blue calipers, 380x30mm front rotor - requires 18" wheels or larger. 
CCB = BMW Carbon Ceramic Brakes: gold calipers, 400x38mm front rotor, requires 19" wheels or larger.

 

Square Setups


Recommended for most types of street and performance driving. Allows proper front-to-rear tire rotation to extend tire life & improve handling balance.

  • Front & Rear: 18x9.5” ET22 with 265/40-18 tires

    • Brake clearance: SB

    • Direct fit.

  • Front & Rear: 19x9.5” ET22 with 265/35-19 tires

    • Brake clearance: SB CCB

    • Direct fit.

Staggered Setups


Maintains stock-like handling characteristics, tires can only be rotated left to right. Maximizes both front and rear tire width.

  • Front: 18x9" ET30 or ET31 with 255/40-18 tires
    Rear: 18x10” ET25 with 275/40-18 tires

    • Brake clearance: SB

    • Direct fit.
       

  • Front: 19x9" ET28 or ET30 with 255/35-19 tires
    Rear: 19x10" ET25 with 275/35-19 tires

    • Brake clearance: SB (ARC-8) CCB (SM-10)

    • Available in ARC-8 or SM-10 designs only.

    • 3mm front spacers required.
       

  • Front: 19x9.5" ET22 with 255/35-19 tires
    Rear: 19x10" ET25 with 275/35-19 tires

    • Brake clearance: SB CCB

    • Available in ARC-8, EC-7, and SM-10 designs only.

    • Direct fit.

    • 265/35-19 front tires may also be used.

 

Performance Street/Track Fitments

These fitments are effective for both performance oriented street cars and weekend track warriors. The suspension type, alignment settings, and tire brand/size can be changed accordingly to work for either scenario.

Square Setups
Recommended for most types of street and performance driving. Allows proper front-to-rear tire rotation to extend tire life & improve handling balance.

  • Front & Rear: 18x10" ET25 with 275/35-18 tires

    • Brake clearance: SB

    • 285/35-18 tires may also be used. Negative camber is recommended.

    • 5mm front spacers may be required with certain aftermarket suspensions, see below.
       

  • Front & Rear: 18x10.5" ET40 with 275/35-18 tires

    • 285/35 or 295/35 tires may also be used. 

    • 20-25mm front spacers required depending on suspension configuration.

    • Not recommended for limited-clearance suspensions like KW, Öhlins unless you are willing to modify spring configuration to improve clearance.

  • Front & Rear: 18x10.5" ET22 with 275/35-18 tires

    • Available in our FL-5, SM-10, ARC-8R, and EC-7R designs.  

    • 285/35 or 295/35 tires may also be used. 

    • Aggressive front and rear negative camber required.

    • 5mm front spacers typically required depending on suspension configuration.

    • Rear rolled fenders recommended.

    • Not recommended for limited-clearance suspensions like KW, Öhlins unless you are willing to modify spring configuration to improve clearance.

  • Front & Rear: 19x10" ET25 with 275/35-19 tires

    • Brake clearance: SB CCB

    • 5mm front spacers may be required with certain aftermarket suspensions, see below.

  • Front & Rear: 19x10" ET28 with 275/35-19 tires

    • Brake clearance: SB CCB

    • Avaible in Konig Ampliform model

    • 5mm front spacers may be required with certain aftermarket suspensions, see below.

Staggered Setups
Maintains stock-like handling characteristics, tires can only be rotated left to right. Maximizes both front and rear tire width.

  • Front: 18x9.5" ET22 with 265/35-18 tires
    Rear: 18x10.5" ET40 with 295/35-18 tires

    • Brake clearance: SB

    • Available in FL-5, ARC-8R and EC-7R designs.

    • Front 18x10" ET25 wheel can also be used but may require a 5mm spacer to clear certain aftermarket suspensions, see below.

    • 275/35-18 front tires may also be used. 

    • 285/35-18 rear tires may also be used. 

  • Front: 18x10" ET25 with 275/35-18 tires
    Rear: 18x11" ET44 with 305/35-18 tires

    • Brake clearance: SB

    • Popular fitment.

    • Available in EC-7, FL-5 and SM-10 designs.

    • 5mm front spacers may be required for certain aftermarket suspensions, see below.

    • Front 18x9.5" ET22 wheel can be used to avoid running spacers with certain aftermarket suspensions due to its superior inner clearance.

    • 315/30-18 rear tires may also be used, but may require rolled rear fenders and/or negative camber.

    • Rear 295/35-18 tires can also be used.

    • If running a Brembo 380mm rear brake setup, slight grinding of caliper bolt may be required to ensure proper clearance.

  • Front: 19x10" ET25 with 275/30-19 tires
    Rear: 19x10.5" ET45 with 305/30-19 tires

    • Brake clearance: SB CCB

    • Available in our EC-7 and SM-10 designs.

    • 5mm front spacers may be required for certain aftermarket suspensions, see below.

    • Front 19x9.5" ET22 wheel can be used to avoid running spacers with certain aftermarket suspensions due to its superior inner clearance.

    • Rear 295/30-19 tires can also be used.

  • Front: 19x10" ET25 with 275/30-19 tires
    Rear: 19x11" ET43 and ET44 with 305/30-19 tires

    • Brake clearance: SB CCB

    • Available in our ARC-8, EC-7, and SM-10 designs.

    • 5mm front spacers may be required for certain aftermarket suspensions, see below.

    • Front 19x9.5" ET22 wheel can be used to avoid running spacers with certain aftermarket suspensions due to its superior inner clearance.

    • 315/25-19 rear tires may also be used, but may require rolled rear fenders and/or negative camber.

    • Rear 295/30-19 tires can also be used.

 

Race Fitments

These no-compromise fitments are ideal for dedicated track / race cars. They rely on aggressive negative camber specifications and often require rolled rear fenders to prevent rubbing. Since you'll be using all available real estate under the fender arches to accommodate these wide wheels, coilovers with linear race springs are a must for inner clearance (JRZ, MCS, Ground Control, AST, Moton, etc.).

Staggered Setups
Maintains stock-like handling characteristics, tires can only be rotated left to right. Maximizes both front and rear tire width.

  • Front: 18x10" ET25 with 275/35-18 tires
    Rear: 18x11" ET44 with 305/35-18 tires

    • Brake clearance: SB

    • Popular fitment.

    • Available in EC-7, Fl-5, and SM-10 designs.

    • 5mm front spacers may be required for certain aftermarket suspensions, see below.

    • For suspensions requiring front spacers, the 18x9.5" ET22 with 265/40-18 tires may be used on the front as a direct fit without spacers.

    • 315/30-18 rear tires may also be used, but may require rolled rear fenders and/or negative camber.

    • Rear 295/35-18 tires can also be used.

    • If running a Brembo 380mm rear brake setup, slight grinding of caliper bolt may be required to ensure proper clearance.

  • Front: 18x9.5" ET35 with 265/35-18 tires
    Rear: 18x10.5" ET25 with 295/35-18 tires

    • Brake clearance: SB

    • Need 15mm front spacer

    • Available in Konig Hypergram design.

    • Lightest option! 

    • Aggressive front and rear negative camber required.

    • Rear rolled fenders recommended.

    • 275/35-18 front tires may also be used. 

    • 285/35-18 rear tires may also be used. 

Square Setups


Recommended for most types of street and performance driving. Allows proper front-to-rear tire rotation to extend tire life & improve handling balance.

  • Front & Rear: 18x10.5" ET40 with 275/35-18 tires

    • 285/35 or 295/35 tires may also be used. 

    • 20-25mm front spacers required depending on suspension configuration.

    • Not recommended for limited-clearance suspensions like KW, Öhlins unless you are willing to modify spring configuration to improve clearance.

  • Front & Rear: 18x10.5" ET22 with 275/35-18 tires

    • Available in our ARC-8, FL-5, SM-10, ARC-8R, and EC-7R designs.  

    • 285/35 or 295/30 tires may also be used. 

    • Aggressive front and rear negative camber required.

    • 5mm front spacers typically required depending on suspension configuration.

    • Rear rolled fenders recommended.

    • Not recommended for limited-clearance suspensions like KW, Öhlins unless you are willing to modify spring configuration to improve clearance.

  • Front & Rear: 18x10.5" ET25 with 275/35-18 tires

    • Available in our Konig Hypergram design.

    • Lightest option! 

    • 285/35 or 295/30 tires may also be used. 

    • Aggressive front and rear negative camber required.

    • 5mm front spacers typically required depending on suspension configuration.

    • Rear rolled fenders recommended.

    • Not recommended for limited-clearance suspensions like KW, Öhlins unless you are willing to modify spring configuration to improve clearance.

Notes on fitting an 18x11" Square Setup

For most enthusiasts, our common 18x10" ET25 front, 18x11" ET44 rear staggered fitment is most effective for both street and track duty. Pair these with 275/35-18 tires up front and 305-35-18 tires in the rear respectively and you have a great bolt-on fitment. With that said, many of our clients are serious track nuts or compete W2W on some level. Not only are they looking to maximize grip, but they would like a square fitment for a well balanced chassis with the ability to rotate wheels and tires on all four corners.

In order rotate effectively, the wheel specifications needed to be cohesive from front to rear. This means that either the front or rear will need some level of "work" to properly fit an 11" square fitment.

Option 1: Front & Rear: 18x11 ET44 with 295/35-18 or 305/35-18 tires
Brake clearance: SB
Available in EC-7, FL-5, and SM-10 designs.

 

The 18x11" ET44 was specifically designed for the rear of the F8X chassis, so naturally this is a direct fit out back. When we install these up front however, thick spacers are required for proper strut clearance. Breizh Motorsport's (more info) chose to go this route, and installed 25mm spacers to clear their KW Competition suspension. Keep in mind, spacer thickness will depend on the front tire brand and suspension type, as not all are created equal. An 11" ET44 wheel paired with a 25mm spacer gives us an effective offset of ET19, so this ends up being quite an aggressive fitment on the outside/fender side and a healthy amount of negative camber will be required to bring the top of the tire in under the front fenders. Since you will (should) only find this type of fitment in the hands of racers, aggressive negative camber specs are par for the course and not a limiting factor. The front tires may rub the front fender liners during full-lock turns, and will self-clear over time, which is to be expected when running a fitment this aggressive. Please note: If running a Brembo 380mm rear brake setup, slight grinding of caliper bolt may be required to ensure proper clearance.

Option 2: Front & Rear: 18x11 ET25 with 295/35-18 or 305/35-18 tires
Brake clearance: SB
Available in EC-7 design only.


The 18x11" ET25 was specifically designed for the rear of the E9X M3, and in this scenario it is better suited for front end as the lower offset lends itself to more inner strut clearance. Naturally, this transfers the focus to the rear of the car, where the 18x11" ET25 is very aggressive (28mm more aggressive than the factory 19x10" ET40 rear wheels). In effort for these to work when the car is put through its paces on the race track, rear fender modifications will likely need to be performed in the form of pulling or re-shaping in combination with additional negative camber. Brett Strom from Strom Motorsports (white M4 pictured above) is well versed in this arena and no stranger to modifying factory fenders, therefore he chose to go this route. In some cases we have reports of customers using this square fitment with 305 tires without needing to modify the rear fenders, however adding -2 degrees or more of camber in the rear was still necessary.

In conclusion, neither of these 11" square fitments are considered "bolt-on fitments" and should be reserved for serious track/race cars. It is important to note that regardless of which offset you choose to use, compliant track oriented suspension equipped with linear springs and a spring perch location above the front tires will be required to maximize inner clearance to the strut.