BMW i3s Tires

BMW i3s uses two tire sizes across its 2018 through 2021 production run: 175/55R20 and 195/50R20. Both are metric radial sizes built for 20-inch wheels, and both appear across all four model years rather than being tied to an early-versus-late production change.

That means year alone is not enough to choose a replacement tire for a BMW i3s. Check the tire information placard, inspect the sizes currently fitted to the car, and confirm which size belongs at each wheel position before selecting a tire, especially if the car has had wheels or tires changed previously.

On a BMW i3s, 175/55R20 means the tire is 175 millimeters wide, has a 55 percent aspect ratio, uses radial construction, and fits a 20-inch rim. It is a modern metric size code, so the final number is the wheel diameter and the R identifies the tire as a radial.

Understanding that code helps prevent a common mistake on BMW i3s fitment, because the two listed sizes are close in overall appearance but not identical. Match the full size code exactly, not just the 20-inch wheel diameter, and verify the placement on the car before replacing a single tire or an axle pair.

A 2019 BMW i3s has 2 tire sizes listed because BMW i3s used a two-size fitment throughout the entire 2018 to 2021 run. The split is not caused by a wheel-diameter change, since both listed sizes fit 20-inch wheels, but by the model’s specialized fitment arrangement using different metric sizes on the same vehicle family.

That makes it important to identify which size belongs where on your particular BMW i3s before replacing tires. Read the sidewall on the tires already installed, compare front and rear sizes, and avoid assuming that one listed size can replace the other simply because both share the same rim diameter.

A 2020 BMW i3s can use either 175/55R20 or 195/50R20, and both sizes are valid within the model range for that year. The correct choice depends on the specific wheel position and the car’s present configuration, not on a year-based change in wheel diameter.

Start by checking the tire information placard and then compare it with the sidewall markings on the tires currently fitted to your BMW i3s. If the car is new to you or has had previous tire work, verify that the installed sizes are arranged correctly before replacing one tire, an axle pair, or a complete set.

The available BMW i3s fitment information here identifies the tire sizes used on the model but does not include brand-specific product entries. That means the key fitment facts are the two approved size codes and their shared 20-inch rim diameter rather than a brand list for direct comparison.

When comparing brand options for a BMW i3s, focus first on matching the exact size code and verifying the intended wheel position. Once the fitment is confirmed, you can compare brand-specific characteristics such as tread design, construction details, and service recommendations within the correct size.

BMW i3s uses modern metric radial sizing rather than the older high-pressure, cord, balloon, or classic bias-ply series seen on vintage vehicles. The two listed sizes differ in section width and aspect ratio, but both are 20-inch radial tires intended for the same 2018 to 2021 model family.

For a BMW i3s owner, the practical question is not choosing among historic tire series but confirming the correct modern size for the correct wheel position. Once that is established, compare current tire offerings by their exact size code and by how closely they match the vehicle’s intended handling and ride characteristics.

A stored BMW i3s should be kept on clean, properly inflated tires in a cool, dry, dark environment away from direct sunlight, ozone sources, and petroleum contamination. Long periods of sitting can promote flat spotting and age-related deterioration even when tread wear is minimal.

Move the BMW i3s periodically or slightly change the tire contact patch if it will remain parked for extended stretches. Clean floors, stable temperatures, and regular pressure checks matter, especially with the model’s narrow 20-inch tires, which benefit from careful storage habits on a low-use collector or specialty vehicle.

Tires on a BMW i3s should be inspected regularly for pressure loss, sidewall damage, punctures, uneven wear, and age cracking. A monthly visual check is a sensible baseline, with a closer inspection before road trips, seasonal use, or after the car has been parked for a long period.

Because BMW i3s uses specialized narrow 20-inch sizes, small issues can affect ride quality and handling more noticeably than on a vehicle with more conventional tire dimensions. Check both sizes carefully, compare wear across the car, and address any mismatch, damage, or abnormal wear pattern before continued driving.

BMW i3s tires should be replaced when age, cracking, impact damage, irregular wear, or structural concerns appear, even if the tread still looks serviceable. Collector and low-mileage cars often age out tires long before they wear them out, and appearance alone is not a reliable guide to continued safe use.

Inspect the full tire, including inner and outer sidewalls, and consider both calendar age and service history when evaluating a BMW i3s. If one tire has been damaged or one axle shows substantially different wear, it is wise to review the whole set so the car keeps a consistent fitment in its correct 175/55R20 and 195/50R20 sizes.

A BMW i3s fitted with the correct size tires in sound condition can be used on public roads, but safety depends on more than matching the sidewall code. Tire age, inflation pressure, damage, wear pattern, and proper placement of the two sizes all affect whether the car is ready for normal road service.

Before driving a BMW i3s, confirm that each tire matches its intended wheel position and that the full set is free from cracking, impact damage, and abnormal wear. A specialized fitment like this should be treated carefully, especially if the car has sat unused or has an unknown maintenance history.

Before driving a BMW i3s, check inflation pressures, inspect both sidewalls on all four tires, and verify that the installed sizes are correct for their positions on the car. Also look for punctures, bulges, age cracking, and any sign that the tires have worn unevenly.

That quick inspection matters because BMW i3s uses two specific 20-inch sizes rather than a one-size-all arrangement. If anything looks inconsistent, especially a mismatch in size placement or visible damage, resolve it before road use so the car’s handling is not compromised by an avoidable tire issue.

A BMW i3s should only be driven at speeds appropriate to the exact tires fitted, their condition, and the manufacturer’s service guidance for that specific tire. The correct BMW i3s size alone does not establish a safe speed if the tires are aged, damaged, underinflated, or improperly matched on the car.

Treat any newly acquired BMW i3s conservatively until the tire condition and fitment are fully verified. If the car has older tires or an uncertain service history, begin with careful low-speed evaluation and work from the tire’s condition and specifications rather than assuming full performance from appearance alone.