2013 BMW 640i Tires

The 2013 BMW 640i uses six radial tire sizes: 245/45R18, 245/40R19, 245/35R20, 275/40R18, 275/35R19, and 275/30R20. Some applications use 245/45R18 as a full-vehicle fitment, while staggered setups pair a narrower front tire with a wider rear tire in matching 18-, 19-, or 20-inch wheel diameters.

The practical step is confirming whether the car has a square setup or a staggered front-and-rear arrangement. Checking the current wheel diameter and the tire size already mounted on each axle helps prevent ordering a front size for the rear, or mixing sizes that belong to different wheel packages.

The 2013 BMW 640i uses 18-inch, 19-inch, and 20-inch rim diameters, depending on the tire size and wheel package. The 245/45R18 and 275/40R18 sizes use 18-inch rims, the 245/40R19 and 275/35R19 sizes use 19-inch rims, and the 245/35R20 and 275/30R20 sizes use 20-inch rims.

Wheel diameter is the first detail to verify before selecting tires for this car. A 640i with aftermarket wheels or a changed wheel package may not match the size originally associated with its body style, so reading the sidewall and confirming the actual wheel dimensions on the car is the safest starting point.

No. The 2013 BMW 640i appears with both shared and staggered fitments across its Coupe and Convertible applications. Some full-vehicle listings use 245/45R18, while the front-position listings use 245/45R18, 245/40R19, or 245/35R20 and the rear-position listings use 275/40R18, 275/35R19, or 275/30R20.

That means the exact sub-model name is only part of the answer; the tire position and wheel package matter just as much. Owners should confirm whether they are replacing all four tires on a square setup or replacing front and rear sizes separately on a staggered car.

Start with the exact tire size and wheel diameter the car is using, then match the tire to the correct front or rear position if the 640i has a staggered setup. All primary fitments here are radial, so the main comparisons are tire series, brand, sidewall styling where available, and rim-width compatibility.

After size confirmation, think about how the car is driven. A grand touring BMW that sees regular highway use may call for a different product choice than one used mostly for fair-weather driving, and the wheel setup should be checked carefully if the car has been modified from its original configuration.

Tires for the 2013 BMW 640i are available from BFGoodrich, Nitto, and Pro-Trac, depending on the size. BFGoodrich appears across several front and rear sizes, Nitto covers multiple staggered fitments, and Pro-Trac is present in the 275/40R18 rear size with appearance-oriented sidewall choices.

Brand selection should follow the correct size rather than the other way around. Once the size is confirmed, compare the available series within that fitment, since one size may offer several choices while another, especially a rear low-profile size, may have a narrower product range.

Blackwall is the main sidewall style across most 2013 BMW 640i tire sizes. In the 275/40R18 rear size, additional sidewall choices include redline and raised white letter styling through the Pro-Trac Street Pro III series.

That makes sidewall appearance a meaningful decision mainly for owners running the 18-inch staggered rear fitment. Buyers using 19-inch or 20-inch combinations will typically be choosing among blackwall tires, so the comparison there shifts more toward tire series, brand, and wheel compatibility than visual sidewall treatment.

A period-style approach on a 2013 BMW 640i usually starts with keeping the car in its proper radial size and matching the wheel diameter already on the vehicle. Since this is a modern grand touring BMW rather than a vintage bias-ply application, the look comes more from preserving the intended wheel-and-tire proportion than from changing construction type.

Owners who want a more appearance-driven presentation may pay closer attention to sidewall treatment, especially in 275/40R18 where blackwall, redline, and raised white letter options exist. Exact originality questions are best checked against BMW literature, window-sticker records, or marque-specific references if factory-delivered appearance matters.

Yes. Correct tire fitment matters on a 2013 BMW 640i because the visual stance and the mechanical balance of the car depend on keeping the proper size relationship, especially on staggered front-and-rear setups. The wrong profile or wheel diameter can change the appearance of the wheel wells and disrupt the intended front-to-rear proportion.

Fitment accuracy also matters when the car is being returned to a clean, well-sorted roadgoing condition. Confirming the wheel diameter, the front and rear positions, and the actual tire size mounted on the car helps preserve both appearance and proper compatibility instead of relying on assumption.

Yes. A 2013 BMW 640i with aftermarket wheels, altered suspension height, spacer changes, or non-original wheel widths may need a more careful fitment check even when the tire size looks familiar. That matters even more on staggered applications, where the front and rear sizes are already different by design.

The important checks are actual wheel diameter, wheel width, tire-to-fender clearance, and steering clearance at full lock. A modified car can no longer be judged by model name alone, so the existing tire sidewall and wheel dimensions should be confirmed before choosing replacements.

Before driving a 2013 BMW 640i on new tires, inspect inflation pressure, bead seating, valve condition, and the front-to-rear size match if the car uses a staggered setup. It is also wise to verify that each tire matches the correct wheel diameter and that there is no rubbing at the fenders or suspension components.

A broader walkaround should include checking for cuts, bulges, visible air loss, and any sign that the new tires are contacting the body or inner wheelhouse. After the first miles of driving, another quick inspection helps confirm that the tires are wearing evenly and settling properly on the car.

Tires on a 2013 BMW 640i should be inspected regularly, not just when tread appears low. Frequent checks for pressure, uneven wear, cracking, cuts, punctures, or impact damage are especially worthwhile on low-profile 19-inch and 20-inch sizes, where wheel and sidewall condition can change quickly after road hazards.

Cars that are driven occasionally still need routine inspection because age and storage conditions can affect tires even when mileage stays low. Looking over the tires before longer drives and after extended storage helps catch condition issues early, particularly on a grand touring car that may spend periods parked between uses.