The 2001 BMW M5 sits in the E39 era that helped define the modern super sedan: restrained in appearance, serious in road manners, and built around a chassis that still draws devoted enthusiasts. Tire fitment is central to that character because this M5 uses a staggered 18-inch setup, with 245/40R18 in front and 275/35R18 in the rear, both in radial construction. That means the real choice is not a vintage bias-ply-versus-radial decision, but selecting the right series, sidewall presentation, and performance-oriented tire within the correct front and rear sizes. Before changing anything, confirm the car still has the proper staggered wheel setup.
Which Tire Size Is Right for The 2001 BMW M5
The 2001 BMW M5 uses two primary tire sizes, and they serve different positions on the car rather than different trims. Front fitment is 245/40R18 and rear fitment is 275/35R18, both mounted on 18-inch wheels in radial construction. The first step is confirming that the car still has its staggered front-and-rear wheel setup, because choosing tires by position matters more here than choosing between alternate primary sizes.
245/40R18 is a metric radial size in which 245 refers to nominal section width in millimeters, 40 is the aspect ratio, R identifies radial construction, and 18 is the wheel diameter in inches. On the 2001 BMW M5, this size is used at the front and helps preserve the intended staggered layout. Available choices include blackwall options from BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac, along with Redline and RWL treatments in the Pro-Trac Street Pro III series. This is the size to evaluate when replacing front tires while maintaining the car's proper front-wheel fitment and appearance goals.
275/35R18 is also a metric radial size, with 275 indicating nominal section width in millimeters, 35 indicating the aspect ratio, and 18 identifying the wheel diameter. On the 2001 BMW M5, this is the rear tire size and it works as part of the factory-style staggered arrangement rather than as an all-around fitment. Product choices in this size center on blackwall performance-oriented offerings from BFGoodrich and Nitto across several g-Force and NT555 G2 series options. This is the size to focus on when rear-tire replacement, wheel-width compatibility, and maintaining the car's front-to-rear balance are the priority.
Sub-model fitment on the 2001 BMW M5 is straightforward in one sense and very specific in another: the covered configuration uses a front and rear tire assignment rather than multiple trim-level tire packages. Checking whether you are selecting for the front or rear position matters because the two sizes are not interchangeable roles.
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2001 BMW M5 Base Front
The 2001 BMW M5 Base Front uses the smaller of the two staggered radial sizes on an 18-inch wheel. Tire selection here centers on preserving the correct front fitment while comparing available blackwall, redline, or raised white letter appearance choices where they exist.
The 2001 BMW M5 Base Rear uses the wider rear radial size that completes the car's staggered 18-inch setup. Choosing a rear tire means confirming rear wheel width and comparing performance-oriented product options within the correct size rather than matching the front tire size.
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 2001 BMW M5 Tires for Sale
Available 2001 BMW M5 tire choices span the required 245/40R18 front and 275/35R18 rear sizes, with blackwall options from BFGoodrich, Nitto, and M&H Racemaster, plus Pro-Trac Street Pro III selections in redline and RWL for the front size.
These FAQs focus on the 2001 BMW M5's staggered tire sizing, 18-inch rim fitment, front-versus-rear selection, available sidewall and brand choices, and the wheel, suspension, and maintenance checks that matter before road use.
Tire Size & Fitment
What tire size fits a 2001 BMW M5?
The 2001 BMW M5 uses a staggered tire setup with 245/40R18 on the front and 275/35R18 on the rear. Both are radial tire sizes for 18-inch wheels, and they are assigned by position rather than offered as interchangeable primary fitments for every corner of the car.
That makes front-versus-rear identification the first step before choosing tires. A car that has been changed to non-original wheel widths or a square setup should be checked carefully, because the M5's correct tire choice depends on the wheels actually installed as much as the model year and badge.
What size rim does a 2001 BMW M5 use?
Both primary tire sizes for the 2001 BMW M5 use 18-inch rim diameter. The front 245/40R18 and rear 275/35R18 are both built around that same wheel diameter, even though the two tires differ in width and profile to create the staggered fitment.
Rim diameter alone does not settle the whole fitment question, however. Wheel width still matters, especially at the rear, so it is worth confirming the actual front and rear wheels on the car before ordering replacements, particularly if the M5 has aftermarket wheels or a previous owner changed the setup.
Why does the 2001 BMW M5 have more than one tire size?
The 2001 BMW M5 has more than one tire size because it uses a staggered setup, with one size assigned to the front axle and a wider size assigned to the rear. In this case, 245/40R18 is the front fitment and 275/35R18 is the rear fitment.
A staggered layout means tire selection should follow wheel position, not just overall rim diameter. Mixing up front and rear sizes can create mounting problems or upset the intended setup, so it helps to verify which wheels are on the car and whether it still retains the original front-to-rear width difference.
Choosing the Right Tire
What should I consider when choosing 245/40R18 and 275/35R18 tires for a 2001 BMW M5?
Start with the correct position-specific sizing: 245/40R18 for the front and 275/35R18 for the rear. From there, compare tire construction, rim-width compatibility, load figures where shown, sidewall style, and the overall character of each product series so the tires match both the car and its intended use.
A road-focused M5 may call for a different choice than a car used for specialized straight-line events or one built around a certain appearance theme. It also helps to compare the actual wheels on the car, since aftermarket changes can shift what works best within the correct tire-size range.
What sidewall styles are available for 2001 BMW M5 tires?
Blackwall is the dominant sidewall style across the available 2001 BMW M5 tire options, and it appears in both the front and rear sizes. In the front 245/40R18 size, additional sidewall treatments include Redline and RWL through Pro-Trac Street Pro III offerings.
That means sidewall appearance can become part of the decision, especially if the car is being styled for a more custom or period-inspired look rather than a strictly understated presentation. Since those alternate sidewall choices are tied to the front size here, check the full front-and-rear combination before deciding on a visual theme.
What brands offer tires for the 2001 BMW M5?
Available brands for the 2001 BMW M5 include BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Brand coverage is not identical across both sizes, though, because the front 245/40R18 has broader variety while the rear 275/35R18 centers on BFGoodrich and Nitto blackwall radial options.
That brand spread gives buyers room to compare tire series and presentation rather than treating every option as the same. The useful approach is to choose by correct front or rear size first, then compare the available brands within that position based on wheel specs, intended use, and appearance preference.
Restoration & Appearance
Which tire should I choose for a period-style 2001 BMW M5?
A period-style 2001 BMW M5 starts with preserving the correct staggered sizing: 245/40R18 in front and 275/35R18 in the rear. Within those sizes, blackwall radials keep the most restrained presentation, while certain front-size options introduce redline or raised white letter styling for owners pursuing a more customized look.
The key is deciding whether the goal is an understated early-2000s sport sedan appearance or a more individualized presentation. Tire sidewall treatment can change the visual character quickly, so it helps to consider the wheel design, ride height, and overall build theme before settling on a front-and-rear combination.
How does tire construction affect the appearance of a restored 2001 BMW M5?
On a 2001 BMW M5, appearance changes come less from bias-ply-versus-radial construction and more from sidewall treatment, tread presentation, and maintaining the proper staggered sizing. The primary fitment is radial, so the visual question usually becomes blackwall versus alternate front-sidewall styles such as redline or RWL.
Keeping the correct front and rear size relationship does a lot to preserve the car's intended stance. A mismatched setup, unusually aggressive sidewall styling, or incorrect wheel widths can shift the look away from a clean E39 M5 presentation even before the car turns a wheel.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2001 BMW M5?
Yes, modifications can affect tire fitment on a 2001 BMW M5 even when the tire sizes appear correct on paper. Aftermarket wheels, altered wheel widths, suspension changes, ride-height adjustments, or body modifications can all change the clearance picture for the front 245/40R18 and rear 275/35R18 setup.
That is why the actual car should be checked before choosing replacements, especially if its history is uncertain. Wheel width, offset, steering clearance, and rear-fender room all matter, and a modified M5 may need more careful measurement than one that still retains its original-style wheel and suspension layout.
What should I inspect before driving a 2001 BMW M5 on new tires?
Before driving a 2001 BMW M5 on new tires, inspect wheel condition, verify correct front and rear sizes, and confirm proper inflation. It is also smart to look over alignment-related wear items, check for rubbing at full steering lock, and make sure each tire is mounted on the intended axle position.
A short road test should be paired with another visual check afterward. Uneven clearance, vibration, or contact marks can show up quickly if wheel specs or suspension settings are off, and catching those early is especially important on a staggered performance sedan that depends on correct front-to-rear fitment.
How often should tires on a 2001 BMW M5 be inspected?
Tires on a 2001 BMW M5 should be inspected regularly, not just by mileage. Collector and enthusiast cars often spend time parked, so tread depth is only part of the picture; sidewall cracking, air loss, flat spotting, bulges, and uneven wear all deserve attention before routine driving or a longer trip.
A practical habit is to look them over before drives, check pressures consistently, and inspect more closely after seasonal storage. Since the M5 uses different front and rear sizes, pay attention to each axle separately rather than assuming wear or condition will match from one end of the car to the other.
