The 2018 Toyota Mirai arrived as one of the most distinctive production sedans of its era, pairing familiar Toyota usability with hydrogen fuel-cell technology and a design shaped by efficiency-minded engineering. Buyers looking after one today are usually balancing everyday drivability with the need to keep fitment straightforward and correct. The 2018 Toyota Mirai uses a 215/55R17 radial tire on a 17-inch rim, so the main decision is less about multiple factory sizes and more about choosing the right tire within that fitment. Available choices stay in a modern blackwall radial format, with differences centered on tire series and performance character. Wheel width, overall condition, and any later modifications should still be confirmed before installation.
Which Tire Size Is Right for The 2018 Toyota Mirai
The 2018 Toyota Mirai uses one primary tire size: 215/55R17, a radial fitment on a 17-inch rim. That same size carries across the Mirai Base sub-model, so the question is not which primary size applies, but which 215/55R17 tire best matches the car's wheel setup, intended road use, and overall driving character.
A 215/55R17 size uses a 215-millimeter nominal section width, a 55-series profile, radial construction, and a 17-inch rim diameter. On the 2018 Toyota Mirai, this is a modern radial fitment that suits the car's contemporary wheel and tire package rather than a vintage bias-ply format. Available choices in this size include BFGoodrich blackwall tires from the g-Force Comp 2 AS and g-Force Phenom T/A series. Choosing within 215/55R17 comes down to confirming wheel compatibility and selecting the tire series that best fits the Mirai's condition, use, and desired on-road feel.
Fitment is straightforward across the covered 2018 Toyota Mirai sub-models. The Mirai Base uses the same primary tire size, which keeps the focus on choosing the right tire within that fitment and confirming the car still has its intended wheel setup.
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2018 Toyota Mirai Base
The 2018 Toyota Mirai Base uses the same 215/55R17 radial tire fitment as the model core. That makes tire selection more about choosing among the available blackwall radial options and checking wheel width, condition, and any previous changes before replacement.
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 2018 Toyota Mirai Tires for Sale
Available 215/55R17 choices for the 2018 Toyota Mirai center on BFGoodrich radial blackwall tires in two distinct series: g-Force Comp 2 AS and g-Force Phenom T/A. The main comparisons are tire series character, load specification where stated, and wheel-width compatibility within the 17-inch fitment.
Mirai owners usually want clear answers on the 215/55R17 fitment, 17-inch rim compatibility, available radial tire choices, and what to inspect before putting a low-mileage or regularly driven car back on the road.
Tire Size & Fitment
What tire size fits a 2018 Toyota Mirai?
The 2018 Toyota Mirai uses a 215/55R17 radial tire. That is the primary fitment for the model, and the Mirai Base sub-model uses the same size, so there is no split between multiple original tire sizes within the covered fitment.
A buyer choosing tires for this car should stay focused on the 215/55R17 size first, then compare the available tires within that fitment. It is still smart to confirm the car has its intended 17-inch wheels and has not been changed with aftermarket wheels, unusual offsets, or suspension alterations that could affect clearance or wheel-width compatibility.
What size rim does a 2018 Toyota Mirai use?
The 2018 Toyota Mirai uses a 17-inch rim with its 215/55R17 tire fitment. The tire size itself confirms that rim diameter, and the available Mirai tire options in this fitment are built around the same 17-inch wheel diameter.
Rim diameter is the first wheel measurement to confirm before ordering replacement tires, but it is not the only one that matters. Wheel width should also be checked against the tire's approved range, especially if the car no longer has its original wheels or if a previous owner changed the wheel package for appearance or performance reasons.
Does the 2018 Toyota Mirai Base use the same tire size?
Yes. The 2018 Toyota Mirai Base uses the same 215/55R17 radial tire size as the model core. That keeps replacement straightforward because the fitment question is settled before comparing tire brands or series within the correct size.
Even with shared fitment, the actual car should still be inspected before replacement. A Mirai Base with different wheels, suspension changes, or worn alignment components may need extra attention before new tires go on, since matching the original size is only part of getting proper clearance, even wear, and predictable road manners.
Choosing the Right Tire
What should I consider when choosing a 215/55R17 tire for a 2018 Toyota Mirai?
Start with the correct size, which is 215/55R17, and make sure the tire is intended for a 17-inch wheel with compatible wheel width. On a 2018 Toyota Mirai, the available choices stay within modern radial construction, so selection is mostly about tire series, load specification where stated, and the condition of the car's wheels.
Beyond size, think about how the Mirai is actually used. A regularly driven car may call for a different tire character than one used occasionally, but either way the wheel width, tire age, and current suspension condition matter. Picking the right tire means balancing the correct fitment with the car's real-world use rather than choosing by brand name alone.
What brands offer tires for the 2018 Toyota Mirai?
The available tires for the 2018 Toyota Mirai in 215/55R17 come from BFGoodrich. Within that brand, the fitment includes more than one tire series, giving Mirai owners some room to compare options while staying in the correct size and modern radial construction.
Since the brand choice is concentrated here, the more useful comparison is between the individual tire series and their specifications rather than between competing brand names. Wheel-width compatibility, any stated load figure, and the car's intended use will usually tell a buyer more than the logo on the sidewall when selecting a replacement set.
What tire series are available for the 2018 Toyota Mirai?
Two BFGoodrich tire series are available in the 2018 Toyota Mirai's 215/55R17 fitment: g-Force Comp 2 AS and g-Force Phenom T/A. Both are radial blackwall choices built for the same 17-inch wheel diameter, but they remain distinct product lines within that shared size.
Comparing series is useful because the size alone does not tell the whole story. A buyer should look at wheel-width range, any stated load capacity, and the role the car plays today, whether that is regular road use or more occasional driving. Staying within the correct size is the foundation, then the right series choice refines the final result.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Toyota Mirai?
Yes, modifications can affect tire fitment on a 2018 Toyota Mirai even when the tire size remains 215/55R17. Aftermarket wheels, altered wheel offset, suspension changes, or body modifications can change how much room the tire has and whether the wheel still falls within the tire's approved width range.
A Mirai that has been lowered, fitted with non-stock wheels, or repaired after previous damage deserves a closer inspection before new tires are mounted. Check wheel diameter and width, look for rubbing marks, and turn the steering through its range if fitment is close. Small changes in hardware can matter even when the nominal tire size stays the same.
What should I inspect before driving a 2018 Toyota Mirai on new tires?
Before putting a 2018 Toyota Mirai back on the road with new tires, inspect the wheels for damage, confirm proper inflation, and make sure the suspension and alignment are in sound condition. It is also wise to look over brake components and check that the tires seat correctly on the rims without air loss.
A new tire cannot compensate for worn steering parts, bent wheels, or alignment problems that were already present. After installation, pay attention to vibration, pull, or uneven contact on the road and recheck pressure once the tires have seen some use. That extra step helps the new set wear properly and supports stable everyday drivability.
How often should tires on a 2018 Toyota Mirai be inspected?
Tires on a 2018 Toyota Mirai should be inspected regularly, not just when tread looks low. Check them for uneven wear, cuts, bulges, cracking, punctures, and pressure loss, especially if the car spends time parked or is driven infrequently compared with a typical daily-use sedan.
Routine inspections are especially important on a modern specialty vehicle that may not accumulate miles quickly. Looking over the sidewalls and tread every month, and again before a longer drive, can catch problems early. A visual check should be paired with pressure checks and a close look at wheel condition so the correct 215/55R17 fitment performs as intended.
