The 2020 BMW i8 blends plug-in hybrid engineering with low, futuristic styling that made it one of the most visually distinctive BMWs of its era. Whether kept as a modern collector car or driven regularly, the i8 rewards careful attention to tire fitment because its staggered setup is part of the car’s overall character. This model uses 215/45R20 front tires and 245/40R20 rear tires, both in radial construction on 20-inch rims. Available choices include blackwall, raised white letter, and redline treatments depending on size and series. The real priority is keeping the front and rear sizes in their proper positions while matching your appearance goals and intended road use.
Which Tire Size Is Right for The 2020 BMW i8
The 2020 BMW i8 uses two primary tire sizes, with a staggered arrangement that places 215/45R20 at the front and 245/40R20 at the rear. Both sizes are radial fitments on 20-inch rims, so the first step is confirming whether you are replacing the front or rear tires, not choosing between alternate primary sizes for the same position.
Fit(s): Coupe Front, Roadster Front, and Ultimate Sophisto Edition Front
Construction: Radial|Rim: 20 in
215/45R20 is a metric radial size in which 215 identifies the nominal section width in millimeters, 45 is the aspect ratio, R denotes radial construction, and 20 is the rim diameter in inches. On the 2020 BMW i8, this size serves the front position in the staggered setup, so it should be treated as a position-specific fitment rather than a universal size for all four corners. Its role is to preserve the intended front-to-rear tire relationship of the car. Front tire replacement should always begin with position confirmation and wheel verification before comparing product details.
Fit(s): Coupe Rear, Roadster Rear, and Ultimate Sophisto Edition Rear
Construction: Radial|Rim: 20 in
245/40R20 is a metric radial size that uses a 245-millimeter nominal section width, a 40-series profile, radial construction, and a 20-inch rim diameter. On the 2020 BMW i8, this is the rear tire size, giving the car its wider rear fitment within the staggered arrangement. Available choices in this size include BFGoodrich, Nitto, and Pro-Trac, along with blackwall, raised white letter, and redline sidewall treatments across multiple tire series. Rear tire selection is less about finding another primary size and more about choosing the right appearance and product character while keeping the rear fitment correct.
Tire fitment across the 2020 BMW i8 range is straightforward because the covered Coupe, Roadster, and Ultimate Sophisto Edition configurations share the same staggered front and rear sizing pattern. Checking the exact sub-model still matters so the front and rear tire positions stay correctly matched during replacement.
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2020 BMW i8 Coupe Front
The 2020 BMW i8 Coupe Front uses the front tire size in the i8 staggered setup, with radial construction on a 20-inch rim. Tire selection here centers on replacing the front position correctly and confirming that the wheel and tire remain matched to the car’s front fitment.
The 2020 BMW i8 Coupe Rear uses the wider rear tire size in radial construction on a 20-inch rim. That makes the buying decision more about choosing among the available rear-tire products and sidewall styles while keeping the rear position distinct from the front.
The 2020 BMW i8 Roadster Front follows the same front-position radial fitment used on the i8 staggered setup. Replacing this tire starts with confirming the front wheel position so the narrower front size is not confused with the wider rear fitment.
The 2020 BMW i8 Roadster Rear uses the same wider rear radial tire size found elsewhere in the i8 lineup. Selection at this position is mainly about preserving the intended staggered arrangement and comparing available rear-tire styles and series.
The 2020 BMW i8 Ultimate Sophisto Edition Front uses the same front radial tire fitment as the other covered i8 versions. The practical takeaway is simple: verify that you are replacing the front tire position and keep the staggered sizing layout intact.
The 2020 BMW i8 Ultimate Sophisto Edition Rear uses the same rear radial tire size as the other covered configurations. Rear tire choice should focus on the correct position, the intended look of the sidewall, and the specific tire series being considered.
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 2020 BMW i8 Tires for Sale
Available 2020 BMW i8 tire choices center on the 245/40R20 rear size, with BFGoodrich, Nitto, and Pro-Trac options in several radial series. The main comparison points are blackwall, raised white letter, and redline sidewall treatments, along with product-specific rim-width and load details where noted.
Common 2020 BMW i8 tire questions usually come down to front-versus-rear sizing, 20-inch rim fitment, available rear tire styles, and what to inspect before putting a low-use or modified i8 back on the road.
Tire Size & Fitment
What tire size fits a 2020 BMW i8?
The 2020 BMW i8 uses a staggered tire setup with 215/45R20 at the front and 245/40R20 at the rear. Both are radial sizes mounted on 20-inch rims, and they are used across the covered Coupe, Roadster, and Ultimate Sophisto Edition configurations in their respective front and rear positions.
That means the first fitment step is identifying which end of the car needs replacement. The i8 does not use the same tire size at all four corners, so front and rear tires should not be treated as interchangeable without first confirming the actual wheel position and current wheel setup on the car.
What size rim does a 2020 BMW i8 use?
The 2020 BMW i8 uses 20-inch rims with both of its primary tire sizes. The front 215/45R20 and rear 245/40R20 are both built around a 20-inch wheel diameter, which keeps rim diameter simple even though the car uses different front and rear tire widths and profiles.
Rim diameter is only one part of fitment, so it should not be the only checkpoint. Wheel width, the tire’s intended front or rear position, and any aftermarket wheel changes still matter, especially on a car with a staggered arrangement and tight clearances like the i8.
Do all 2020 BMW i8 sub-models use the same tire size?
The covered 2020 BMW i8 sub-models share the same overall sizing pattern rather than using one single size everywhere. Coupe, Roadster, and Ultimate Sophisto Edition versions all use 215/45R20 in front and 245/40R20 in the rear, so the front-to-rear relationship remains consistent across the range.
That consistency simplifies replacement, but the tire position still has to be verified before ordering or mounting. A buyer who confirms only the model name and not the front or rear location can still end up with the wrong size, even though the broader sub-model fitment remains the same.
Choosing the Right Tire
What should I consider when choosing a 245/40R20 tire for a 2020 BMW i8?
Start with the basics: 245/40R20 is the rear tire size for the 2020 BMW i8, so the correct position matters just as much as the size itself. Available rear choices differ by brand, tire series, sidewall treatment, and in some cases rim-width guidance, load information, and product weight.
A useful comparison goes beyond matching the size code. Consider whether the car is being kept visually understated with a blackwall, given a more traditional performance look with raised white letters, or styled with a redline treatment, then verify that the selected tire suits the wheel and the way the i8 is actually used.
What sidewall styles are available for 2020 BMW i8 tires?
Available sidewall styles for the 2020 BMW i8 rear tire selection include Blackwall, RWL, and Redline. Blackwall appears across several 245/40R20 rear tire choices, while Pro-Trac Street Pro III is offered with either raised white letters or a redline treatment in the same rear size.
Sidewall choice affects appearance more than fitment, but it still shapes the character of the car. A blackwall keeps the presentation modern and restrained, while RWL or redline can shift the visual tone in a more performance-oriented or custom direction without changing the underlying rear tire size.
What brands offer tires for the 2020 BMW i8?
Available 2020 BMW i8 rear tire options in 245/40R20 come from BFGoodrich, Nitto, and Pro-Trac. Those brands cover several radial tire series, including g-Force Comp 2 AS, g-Force Phenom T/A, Nitto NT555 G2, and Pro-Trac Street Pro III.
Brand choice is only one part of the decision, so it helps to compare the series and sidewall style at the same time. A buyer should also look at any product-specific rim-width or load details that are stated, then confirm that the selected rear tire matches the i8’s actual wheel and intended use.
Restoration & Appearance
Which tire should I choose for a period-style 2020 BMW i8?
A period-style approach for a 2020 BMW i8 begins with keeping the original staggered sizing concept intact: 215/45R20 in front and 245/40R20 in the rear. Since the visible rear tire choices include multiple radial series and sidewall treatments, the appearance decision is mainly about how modern, restrained, or stylized the finished car should look.
An i8 sits in a very different collector space than a mid-century restoration, so exact originality claims should be handled carefully. Buyers who want the car to reflect its showroom-era presentation should compare tire styling with period photography, original sales material, or marque-specific references before committing to a more customized sidewall treatment.
How does tire construction affect the appearance of a restored 2020 BMW i8?
On the 2020 BMW i8, construction is straightforward because the primary fitment is radial. That means the visible appearance difference comes less from bias-ply versus radial choice and more from the tire’s sidewall presentation, tread character, and whether the rear tire uses blackwall, raised white letter, or redline styling.
For an owner preserving the i8 as a modern collector vehicle, keeping the correct front and rear sizes is still the foundation of the car’s visual stance. Sidewall styling can then fine-tune the look, but it should be chosen with the car’s overall character in mind rather than treated as a simple cosmetic afterthought.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 BMW i8?
Yes. The 2020 BMW i8 already uses a staggered 20-inch tire setup, so changes such as aftermarket wheels, altered wheel widths, suspension adjustments, or ride-height changes can affect how a replacement tire sits and clears the body or steering components.
That is especially important on a low, tightly packaged car. Any i8 with non-original wheels or chassis changes should have its current front and rear wheel dimensions checked before tire selection, rather than assuming the stock size alone answers the whole fitment question.
What should I inspect before driving a 2020 BMW i8 on new tires?
Before putting a 2020 BMW i8 back into regular road use on new tires, inspect the wheels for damage, confirm the tires are mounted in the correct front and rear positions, and check pressure, valve condition, and general installation quality. A quick visual look for rubbing marks or uneven clearance is also worthwhile.
The first miles after installation should be treated as a fitment check, not just a routine drive. Pay attention to steering feel, any unusual vibration, and whether the tires remain clear of suspension and bodywork through normal operation, especially if the car has sat for long periods or has been modified.
What should I check before a longer drive in a 2020 BMW i8?
A longer trip in a 2020 BMW i8 starts with basic tire condition and setup checks: confirm the front 215/45R20 and rear 245/40R20 positions, inspect tread and sidewalls, verify pressure, and look for cuts, bulges, cracking, or signs of slow air loss. Wheel condition deserves the same attention.
Collector-minded or low-mileage cars often need extra scrutiny because time can age a tire even when mileage stays low. It also helps to recheck alignment feel and general stability on a short local drive before committing the car to sustained highway use or a longer touring route.
