BMW i3 Tires

BMW i3 models from 2014 through 2021 use four tire sizes: 155/70R19, 175/60R19, 155/60R20, and 175/55R20. The 19-inch sizes are 155/70R19 and 175/60R19, while the 20-inch sizes are 155/60R20 and 175/55R20. All four are metric radial sizes, and all appear across the full 2014 to 2021 production span rather than being limited to just one part of the run.

The practical takeaway is that year alone is not enough to identify the right tire for a BMW i3. You need to confirm the wheel diameter on the car and then verify which axle position uses the narrower or wider size. Checking the existing tire sidewall and the wheel itself is the fastest way to avoid confusing a 19-inch application with a 20-inch one.

BMW i3 uses two rim diameters across the 2014 to 2021 range: 19 inches and 20 inches. The 19-inch fitments are paired with 155/70R19 and 175/60R19, while the 20-inch fitments are paired with 155/60R20 and 175/55R20. Those diameters run throughout production, so there is no single year break where BMW i3 moved from one wheel size to the other.

That means the correct approach is to inspect the actual wheels on the specific BMW i3 rather than assuming a year-based changeover. A tire built for a 19-inch wheel will not fit a 20-inch wheel, even if the tread width looks similar at a glance. Confirm the wheel diameter first, then match the exact tire size used on that position.

A 2018 BMW i3 has four tire sizes listed because the model used both 19-inch and 20-inch wheel packages, and each package includes a narrower size and a wider size for different positions on the car. The four listed sizes are 155/70R19, 175/60R19, 155/60R20, and 175/55R20. This is a rim-diameter split combined with position-specific sizing, not four interchangeable choices for the same wheel.

The same logic applies to the other years in the BMW i3 range, since every year from 2014 through 2021 shows the same four-size pattern. If your car is a 2018, first determine whether it has 19-inch or 20-inch wheels, then confirm which axle takes the narrower and wider tire. Matching only the model year can still leave you with the wrong diameter or the wrong width for that wheel position.

A 2020 BMW i3 can use 155/70R19, 175/60R19, 155/60R20, or 175/55R20, so the correct size depends on the wheel package and the axle position rather than the year alone. Start by reading the existing tire sidewall, which will show the complete size code. Then confirm that the rim diameter in the code matches the wheel on the car, since 19-inch and 20-inch applications were both used.

Once the wheel diameter is confirmed, compare front and rear tires carefully because BMW i3 sizing is often staggered by width. If the car already has mixed widths, replace each position with the same size that belongs there rather than trying to standardize everything to one size. The safest buying habit is to match the installed size exactly unless you are working from BMW service information for the specific car.

A BMW i3 should be stored on a clean, dry surface away from direct sunlight, ozone sources, and major temperature swings when the tires are fitted. Keep the tires inflated to the vehicle's specified pressures and avoid letting the car sit for long periods with visibly low inflation. Because BMW i3 uses narrow, specialized radial sizes, pressure loss and flat spotting are worth watching closely during storage.

If the BMW i3 will sit for extended periods, move it occasionally so the same part of each tire is not carrying the load continuously. Long-term indoor storage is generally kinder to the rubber than outdoor exposure, especially where heat and UV are severe. Before returning the car to regular use, inspect each tire for cracking, deformation, punctures, and any unusual shoulder wear.

Tires on a BMW i3 should be inspected regularly, with a quick visual check before driving and a more careful inspection at routine service intervals. Pay particular attention to inflation pressure, shoulder wear, tread condition, and any cuts or bulges in the sidewall. Because BMW i3 uses narrow low-rolling-resistance tires in multiple sizes, even modest wear differences can matter if one axle or wheel package is carrying the wrong size.

Monthly pressure checks are a sensible minimum for a collector or lightly used BMW i3, and more frequent checks are worthwhile if the car sits between drives. Uneven wear can be an early sign of alignment, suspension, or inflation issues rather than just normal aging. Catching those problems early helps preserve the tires and keeps the car driving as intended.

Tires on a BMW i3 should be replaced when age, cracking, hardening, puncture damage, impact damage, or structural irregularities appear, even if the tread depth still looks usable. Tread alone is not the full story on a low-mileage car, because rubber ages with time as well as mileage. Any tire that shows sidewall splits, persistent vibration, or visible distortion has moved beyond safe continued use.

The practical rule is to judge a BMW i3 tire by condition, age, and performance together rather than by tread depth alone. If the car has been stored for long periods, inspect the tires more critically before resuming normal driving. A specialist tire inspection is worthwhile whenever an older set still appears cosmetically decent but has seen years of calendar age.

BMW i3 was fitted within a family of specialized metric radial sizes rather than one universal tire size for every car. Across 2014 through 2021, the sizes used are 155/70R19, 175/60R19, 155/60R20, and 175/55R20. That means original fitment for a specific BMW i3 depends on the wheel package and position on the car, not simply on the model name.

For an originality-minded BMW i3 owner, the best approach is to preserve the exact diameter and size layout already assigned to that configuration. Matching the correct 19-inch or 20-inch setup matters to both appearance and driving character. If the car is being prepared for marque-focused judging, verify the installed size arrangement against factory literature for that specific build.

Correct tire fitment can affect how a BMW i3 is viewed by knowledgeable buyers and judges because the car's unusual wheel-and-tire proportions are part of its design identity. Using the right size family preserves the intended stance and keeps the car visually consistent with its original engineering approach. On a model as distinctive as BMW i3, an obviously incorrect diameter or mismatched width stands out quickly.

For owners concerned with presentation, the goal is to keep the correct rim diameter and position-specific sizing rather than substituting a near match. That is especially important when a BMW i3 has staggered widths across the car. Marque clubs, factory literature, and original wheel-package information are the best references when authenticity matters more than convenience.

A correct sidewall style for a BMW i3 restoration should match the modern, specialized radial character of the car rather than mimic older collector-car conventions. BMW i3 belongs to a period where low-rolling-resistance metric radials are part of the vehicle's original identity, so the correct look starts with the proper size and wheel diameter. Preserving the narrow-profile visual balance is usually more important than chasing cosmetic variation.

On a BMW i3, authenticity comes first from the exact size code and proper 19-inch or 20-inch application. If more than one cosmetic sidewall treatment is offered in the market, choose the one that remains consistent with the car's original modern appearance rather than trying to give it a vintage-style presentation. Keeping the factory-style proportions intact does more for correctness than any decorative sidewall detail.

A correctly sized, properly inflated, undamaged tire in the correct BMW i3 application can be suitable for normal public-road use. The key safety factors are matching the exact size to the wheel diameter and position, maintaining proper air pressure, and avoiding aged or damaged tires. Since BMW i3 uses specialized narrow radials, replacing them with an incorrect diameter or width can affect handling and stability more noticeably than on many conventional cars.

Safe road use starts with choosing the exact size assigned to that wheel and axle, then checking condition before regular driving. If a BMW i3 has recently changed ownership or sat unused, inspect all four tires carefully before relying on it in traffic. A professional inspection is wise whenever there is any doubt about age, previous repairs, or uneven wear.

Before driving a BMW i3, check tire pressure, visible tread and sidewall condition, and confirm that each wheel position is carrying the correct size. Look for cuts, bulges, cracking, punctures, or uneven wear that could indicate an alignment or inflation problem. Because BMW i3 uses multiple sizes across 19-inch and 20-inch wheel packages, confirming that no incorrect replacement tire was installed is part of the pre-drive routine.

A quick walkaround can prevent expensive or unsafe mistakes, especially on a BMW i3 that has mixed-width tires front to rear. If one tire size differs from what belongs on that wheel position, resolve that issue before normal road use. Owners who drive infrequently should also be alert for flat spotting after long storage.

A BMW i3 on the correct original-type tire size should be driven within normal legal road speeds and within the condition limits of the installed tires. The deciding factor is not just the model, but the age, health, and inflation state of the actual tires fitted to the car. Even a correctly sized BMW i3 tire should not be pushed hard if it shows signs of aging, damage, or irregular wear.

The practical standard is to let tire condition set the ceiling rather than assuming every older tire is ready for sustained higher-speed driving. If the BMW i3 has older rubber or has been stored for long periods, bring it back into service gradually and evaluate ride quality closely. Smooth, moderate driving is the right approach until tire condition has been fully verified.