The 2018 BMW M5 sits at the intersection of executive luxury and serious high-performance engineering, blending everyday refinement with the kind of power that demands real attention to tire choice. On this car, tire selection is not just about size alone, because the fitment is staggered front to rear and appears in both 19-inch and 20-inch radial setups. Front sizes are 275/40R19 or 275/35R20, while the rear uses 285/40R19 or 285/35R20. Available choices include blackwall, raised white letter, and redline presentations across several modern radial series. The key is matching the exact wheel package and maintaining the intended front-to-rear fitment balance.
Which Tire Size Is Right for The 2018 BMW M5
The 2018 BMW M5 uses four primary tire sizes, and the correct choice depends first on confirming whether the car has the 19-inch or 20-inch wheel setup and whether you are buying for the front or rear axle. This is a staggered radial fitment, so the front and rear sizes are different. Before selecting a tire, verify both wheel diameter and axle position rather than treating the car as a same-size four-corner application.
The 275/35R20 size identifies a metric radial tire with a 275-millimeter section width, a 35-series profile, and fitment for a 20-inch rim. On the 2018 BMW M5, this size is part of the staggered setup and belongs on the front when the car is equipped with 20-inch wheels. Product choices include BFGoodrich, Nitto, and Pro-Trac, with blackwall, raised white letter, and redline sidewall treatments available in several tire series. This size is the right place to focus if the car retains its 20-inch front wheel package and the goal is to preserve the intended front fitment.
The 275/40R19 size uses the modern metric radial format, pairing a 275-millimeter section width with a 40-series profile on a 19-inch rim. For the 2018 BMW M5, this is the front tire size used with the 19-inch staggered wheel package rather than the 20-inch setup. Available selections center on blackwall radial designs from BFGoodrich and Nitto, including more than one g-Force series. This size should be evaluated when the car is running 19-inch front wheels and the owner wants to keep the correct front-to-rear relationship for that package.
The 285/35R20 code denotes a metric radial tire with a 285-millimeter section width, a 35-series aspect ratio, and a 20-inch rim diameter. On the 2018 BMW M5, this size serves the rear axle when the car is equipped with the 20-inch staggered setup. Choices in this size include BFGoodrich, Nitto, and Pro-Trac, with blackwall, raised white letter, and redline styling represented across multiple radial series. This is the rear size to confirm when replacing 20-inch M5 tires, especially if maintaining the car's wider rear stance and staggered fitment is important.
The 285/40R19 size is a modern metric radial that combines a 285-millimeter section width with a 40-series profile for a 19-inch wheel. On the 2018 BMW M5, it is the rear tire size paired with the 19-inch front fitment in the staggered arrangement. This size appears as a primary fitment role rather than an interchangeable alternative to the 20-inch rear setup. It should be chosen only after confirming that the car is equipped with 19-inch rear wheels and that the front tires are being matched to the corresponding 19-inch staggered package.
Fitment on the 2018 BMW M5 is straightforward once axle position is confirmed, because the front and rear are treated as separate sub-model entries with different tire widths. Checking front versus rear matters just as much as confirming 19-inch or 20-inch wheels, since this car uses a staggered radial setup.
1
2018 BMW M5 Base Front
The 2018 BMW M5 Base Front uses the narrower front fitment within the staggered setup, with one size tied to the 19-inch package and another tied to the 20-inch package. Tire selection here starts with confirming wheel diameter, then choosing among the available radial series and sidewall treatments that suit the car's intended look and use.
The 2018 BMW M5 Base Rear uses the wider rear fitment, again split between 19-inch and 20-inch wheel packages. That means the rear tires should be chosen as part of the complete staggered arrangement, with wheel size verified first and appearance or series differences considered after the correct rear size is confirmed.
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 2018 BMW M5 Tires for Sale
Available 2018 BMW M5 tire choices center on modern radial fitments from BFGoodrich, Nitto, and Pro-Trac. Depending on size, the comparison points include g-Force and NT555 G2 series, blackwall styling throughout, plus raised white letter and redline options in selected 20-inch sizes.
These 2018 BMW M5 tire FAQs focus on staggered sizing, 19-inch versus 20-inch wheel fitment, radial tire selection, sidewall and brand choices, and the wheel, suspension, and condition checks that matter before road use.
Tire Size & Fitment
What tire size fits a 2018 BMW M5?
The 2018 BMW M5 uses a staggered tire setup rather than one size at all four corners. Front fitments are 275/40R19 or 275/35R20, while rear fitments are 285/40R19 or 285/35R20, and all of these are radial sizes tied to either a 19-inch or 20-inch wheel package.
That makes wheel diameter and axle position the first two things to verify before ordering tires. A front size should stay with the matching rear size for the same wheel package, and a 19-inch setup should not be mixed casually with a 20-inch setup without confirming the full wheel and vehicle configuration.
What size rim does a 2018 BMW M5 use?
A 2018 BMW M5 uses either 19-inch or 20-inch rims, depending on the wheel package on the car. The 19-inch tires are 275/40R19 in front and 285/40R19 in the rear, while the 20-inch tires are 275/35R20 in front and 285/35R20 in the rear.
The practical takeaway is that the tire size cannot be chosen correctly until the actual wheel diameter is confirmed on the car. If the M5 has had wheel changes at any point, check the wheel markings and current tire sizes directly so the replacement tires match both the rim and the staggered front-to-rear layout.
Why does the 2018 BMW M5 have more than one tire size?
The 2018 BMW M5 has more than one tire size because it uses a staggered arrangement and appears with two different wheel diameters. The front axle uses a 275-width tire, the rear axle uses a 285-width tire, and each axle can be paired with either a 19-inch or 20-inch wheel setup.
That means the correct tire is determined by configuration, not by model name alone. An owner should confirm whether the car is being fitted at the front or rear and whether it currently wears 19-inch or 20-inch wheels, especially if the vehicle has seen wheel upgrades or replacement wheels since new.
Choosing the Right Tire
What should I consider when choosing a 2018 BMW M5 tire?
Start with the basics that matter most on this car: front versus rear position, 19-inch versus 20-inch wheel diameter, and the exact radial size required for that location. From there, the meaningful differences are tire series, sidewall style, rim-width compatibility where stated, and load figures where those details appear.
A useful comparison also includes how the car is driven and how closely the owner wants to follow the present staggered setup. Matching the tire to the correct axle and wheel is more important than choosing a particular brand first, because the M5's fitment depends on keeping the package balanced from front to rear.
What sidewall styles are available for 2018 BMW M5 tires?
Sidewall styling for the 2018 BMW M5 includes blackwall across the available fitments, with raised white letter and redline treatments appearing in selected 20-inch sizes. Those appearance choices are tied to specific products rather than being offered in every size across the full staggered range.
That matters if the goal is to keep the same visual theme at all four corners. Before choosing a sidewall treatment, confirm that the matching front and rear sizes in the wheel package you use are both available in the same style, especially when comparing 20-inch tires with more appearance-oriented options.
What brands offer tires for the 2018 BMW M5?
Tires for the 2018 BMW M5 are available from BFGoodrich, Nitto, and Pro-Trac in the covered fitments. Across the available sizes, the selection includes series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, Nitto NT555 G2, and Pro-Trac Street Pro III.
Brand alone should not be the only deciding factor on this car. It is better to compare the exact size needed for the front or rear axle, then look at sidewall treatment, rim-width specification where shown, and any load information attached to the product so the tire choice suits the M5's current wheel setup.
Restoration & Appearance
Which tire should I choose for a period-style 2018 BMW M5?
A period-style approach for a 2018 BMW M5 starts with preserving the correct staggered radial sizing and the proper 19-inch or 20-inch wheel package already on the car. Once that fitment is established, appearance can be shaped through the available tire series and sidewall choices rather than through a change in construction.
Because this is a modern high-performance sedan, the visual character often comes from keeping the proportions and stance consistent with its factory-era presentation. Owners who want a highly specific original-delivery look should compare the current wheel and tire setup with marque references, window-sticker records, or build documentation before making a cosmetic change.
How does tire construction affect the appearance of a restored 2018 BMW M5?
On a 2018 BMW M5, construction is simpler than on older collector cars because the primary fitments are already radial. The visible appearance difference usually comes less from bias-ply versus radial choice and more from sidewall treatment, tread presentation, and whether the tire keeps the intended front-to-rear proportions of the staggered setup.
That means a restoration-minded owner should focus on correct size, wheel diameter, and matching front and rear visual balance first. A blackwall tire will keep a restrained modern look, while raised white letter or redline options in certain 20-inch sizes create a more customized presentation without changing the car's basic radial fitment theme.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 BMW M5?
Yes, modifications can affect tire fitment on a 2018 BMW M5, especially because the car already uses staggered sizing and two possible wheel diameters. Aftermarket wheels, changes in wheel width or offset, lowering, suspension work, or body alterations can all change how much room is available at the front or rear.
A modified M5 should be checked at full steering lock and through suspension travel before assuming the original replacement size is still appropriate. It also helps to confirm the current wheel measurements directly, since a tire that matches the printed size may still raise clearance issues if the wheel setup has changed.
What should I inspect before driving a 2018 BMW M5 on new tires?
Before driving a 2018 BMW M5 on new tires, confirm that the correct front and rear sizes were installed for the car's 19-inch or 20-inch wheel package. Then inspect tire pressure, bead seating, visible sidewall condition, valve stems, wheel condition, and basic clearance around suspension components, fenders, and steering travel.
It is also smart to recheck lug torque after installation and pay attention to any rubbing, vibration, or pull during the first miles. On a high-performance sedan with staggered fitment, small installation or sizing mistakes become noticeable quickly, so an early inspection helps catch issues before they turn into uneven wear or drivability problems.
What should I check before a longer drive in a 2018 BMW M5?
Before a longer drive in a 2018 BMW M5, make sure the tires match the car's present wheel package and that the front and rear sizes are correctly paired. Check inflation, tread condition, punctures, cuts, bulges, and any signs of irregular wear, especially on a car that may see seasonal or occasional use.
A longer trip is also a good time to look at tire age, monitor for slow air loss, and confirm that nothing contacts the tires under load or during hard steering input. Cars with replacement wheels or suspension changes deserve extra attention, since the M5's wide staggered fitment leaves less margin for avoidable clearance surprises.
