The 2020 Mazda MX-5 Miata carries forward a long-running roadster formula built around light weight, quick responses, and simple driver involvement rather than sheer size or excess power. That makes tire fitment especially important, because this car’s balance and steering feel depend heavily on using the right size for the exact trim. For 2020, the MX-5 Miata uses two primary radial sizes: 205/45R17 and 195/50R16, with fitment varying by sub-model. Available choices range from modern blackwall performance-oriented radials to a wide whitewall option in 195/50R16, so appearance goals matter alongside wheel size, trim level, and intended road use.
Which Tire Size Is Right for The 2020 Mazda MX-5 Miata
The 2020 Mazda MX-5 Miata uses two primary tire sizes, and the right one depends first on the exact sub-model and wheel diameter. Most trims use a 17-inch radial fitment in 205/45R17, while the Sport uses a 16-inch radial fitment in 195/50R16. Before comparing tires, confirm whether the car is equipped with 16-inch or 17-inch wheels and match the tire size to that setup.
Fit(s): 100th Anniversary Special Edition, Club, Grand Touring, RF 100th Anniversary Special Edition, RF Club, and RF Grand Touring
Construction: Radial|Rim: 17 in
205/45R17 is a metric radial size in which 205 is the nominal section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 17 is the wheel diameter in inches. On the 2020 Mazda MX-5 Miata, this size suits the trims that use 17-inch wheels and keeps the discussion focused on radial performance-tire selection rather than vintage construction choices. Available options center on BFGoodrich blackwall tires across the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. This size is the one to evaluate when maintaining the sharper 17-inch trim setup and comparing product character within the same fitment.
195/50R16 is a metric radial size with a 195-millimeter nominal section width, a 50-series profile, radial construction, and a 16-inch rim diameter. On the 2020 Mazda MX-5 Miata, this size belongs to the Sport trim, so it should not be assumed for the 17-inch-wheel sub-models. The available product choice in this fitment is a BFGoodrich Silvertown Radial with a 2-inch whitewall, which gives this size a much more appearance-driven personality than the blackwall 17-inch options. It is the right size to review when confirming a Sport model’s wheel setup and deciding how traditional or distinctive the finished look should be.
Tire fitment on the 2020 Mazda MX-5 Miata is mostly straightforward once the exact sub-model is confirmed, but there is one important split between 17-inch and 16-inch wheel setups. Most covered trims use 205/45R17, while the Sport uses 195/50R16, so trim identification matters before comparing products.
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2020 Mazda MX-5 Miata 100th Anniversary Special Edition
The 2020 Mazda MX-5 Miata 100th Anniversary Special Edition uses the 205/45R17 radial size shared by most of the lineup. Tire selection here is mainly about staying with the correct 17-inch fitment and choosing among the available blackwall performance-oriented product lines.
The 2020 Mazda MX-5 Miata Club uses 205/45R17 radial tires on a 17-inch wheel setup. That keeps the focus on selecting the right tire within this metric radial size rather than sorting through multiple fitment paths.
The 2020 Mazda MX-5 Miata Grand Touring uses the 205/45R17 radial tire size. For this sub-model, the practical choice is comparing available blackwall tires in the correct 17-inch fitment and confirming wheel compatibility if the car has been altered from stock.
2020 Mazda MX-5 Miata RF 100th Anniversary Special Edition
The 2020 Mazda MX-5 Miata RF 100th Anniversary Special Edition also uses 205/45R17 radial tires. Selection centers on preserving the proper 17-inch size and choosing the product series that best matches the car’s use and appearance priorities.
The 2020 Mazda MX-5 Miata RF Club uses the same 205/45R17 radial fitment as the other 17-inch variants. That makes tire choice less about size confusion and more about comparing the available blackwall radial options within that established fitment.
The 2020 Mazda MX-5 Miata RF Grand Touring uses 205/45R17 radial tires. Buyers looking at this sub-model should focus on the correct 17-inch metric radial size first, then compare tire series and wheel-width compatibility details within that fitment.
The 2020 Mazda MX-5 Miata Sport is the trim that uses 195/50R16 radial tires rather than the 17-inch setup found elsewhere in the range. That makes wheel diameter the first check, followed by whether the available whitewall presentation suits the car’s intended look and use.
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 Mazda MX-5 Miata Tires for Sale
Available 2020 Mazda MX-5 Miata tires are all radial, with BFGoodrich offerings across both fitments. The 17-inch 205/45R17 choices are blackwall g-Force series tires with 6.5- to 7.5-inch rim-width guidance, while the 16-inch 195/50R16 option is a Silvertown Radial with a wide whitewall presentation.
Owners of a 2020 Mazda MX-5 Miata usually need to confirm the correct size by trim first, then sort through wheel diameter, radial construction, sidewall style, and product-series differences. These answers focus on that exact fitment path and the checks that matter before road use.
Tire Size & Fitment
What tire size fits a 2020 Mazda MX-5 Miata?
The 2020 Mazda MX-5 Miata uses two tire sizes: 205/45R17 and 195/50R16. Most sub-models, including Club, Grand Touring, and the RF versions listed here, use 205/45R17, while the Sport uses 195/50R16.
The main step is matching the tire to the exact trim and wheel diameter already on the car. A 17-inch MX-5 Miata needs the 205/45R17 fitment, while a 16-inch Sport setup needs 195/50R16, so checking the sidewall and wheel before ordering avoids size confusion.
What size rim does a 2020 Mazda MX-5 Miata use?
A 2020 Mazda MX-5 Miata uses either a 17-inch or 16-inch rim, depending on sub-model. The 205/45R17 fitment uses a 17-inch wheel, while the 195/50R16 fitment uses a 16-inch wheel.
Wheel diameter should be confirmed before comparing tires, because the two primary sizes are not built for the same rim. If the car has aftermarket wheels, verify both diameter and width, since the available 205/45R17 products also carry rim-width guidance that matters for proper tire selection.
Do all 2020 Mazda MX-5 Miata sub-models use the same tire size?
No. Most 2020 Mazda MX-5 Miata sub-models covered here use 205/45R17 radial tires, but the Sport uses 195/50R16. That means the lineup is split between 17-inch and 16-inch fitments.
That distinction matters because tire choice starts with trim identification, not just the model name. A buyer looking at a Club, Grand Touring, or RF variant should be reviewing 205/45R17 options, while a Sport owner should confirm the 16-inch wheel setup and choose within the 195/50R16 fitment.
Choosing the Right Tire
What should I consider when choosing a 2020 Mazda MX-5 Miata tire?
Start with the correct size for the exact sub-model: 205/45R17 for the listed 17-inch trims or 195/50R16 for the Sport. From there, the main variables are product series, sidewall style, radial construction details, and wheel compatibility.
A practical choice comes down to how the car is used and how it should look. The 17-inch fitment centers on blackwall BFGoodrich g-Force options, while the 16-inch fitment has a wide whitewall Silvertown Radial, so the decision can shift from performance-oriented presentation to appearance-driven character very quickly.
What sidewall styles are available for 2020 Mazda MX-5 Miata tires?
The available sidewall styles for the 2020 Mazda MX-5 Miata are Blackwall and Wide Whitewall. Blackwall appears in the 205/45R17 fitment, while the 195/50R16 fitment is represented by a BFGoodrich Silvertown Radial with a 2-inch whitewall.
That gives the buyer two very different visual directions. A blackwall keeps the look modern and understated on the 17-inch setup, while the wide whitewall creates a much more distinctive appearance on a 16-inch Sport fitment, so sidewall style should be chosen only after the correct trim-specific size is confirmed.
What tire series are available for the 2020 Mazda MX-5 Miata?
Available tire series for the 2020 Mazda MX-5 Miata include BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and Silvertown Radial. The first three appear in 205/45R17, while Silvertown Radial appears in 195/50R16.
Series names help separate the product choices once the fitment is settled. On a 17-inch car, the comparison is among several blackwall g-Force options, while the 16-inch Sport fitment stands apart with a whitewall-oriented Silvertown Radial, making size and presentation just as important as the series itself.
Restoration & Appearance
Which tire should I choose for a period-style 2020 Mazda MX-5 Miata?
A period-style choice for a 2020 Mazda MX-5 Miata still begins with the correct trim-specific size. The most appearance-driven option in the available fitments is the 195/50R16 BFGoodrich Silvertown Radial with a 2-inch whitewall, while the 205/45R17 choices are blackwall performance-oriented radials.
That means a period-style presentation is easier to pursue on a Sport with the 16-inch setup than on the 17-inch trims. Appearance should be balanced against the car’s actual wheel diameter, intended use, and overall theme, especially if the car has been modified from its original trim-level wheel arrangement.
How does tire construction affect the appearance of a restored 2020 Mazda MX-5 Miata?
On the 2020 Mazda MX-5 Miata, the available fitments are radial, so appearance changes come more from sidewall style and tire series than from choosing between bias-ply and radial construction. In practice, the visual split here is mainly blackwall versus wide whitewall.
That makes trim and wheel size especially important for a restoration-oriented build. A 17-inch setup leads naturally toward modern blackwall presentation, while the 16-inch Sport fitment opens the door to a more stylized whitewall look, so the final result depends heavily on matching the tire to the wheel package already on the car.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Mazda MX-5 Miata?
Yes. Wheel changes, suspension alterations, lowering, and offset differences can all affect tire fitment on a 2020 Mazda MX-5 Miata, even when the tire size itself looks correct on paper. That matters especially on a compact roadster with low-profile metric radial sizes.
A modified car should be checked for actual wheel diameter, wheel width, steering clearance, and fender clearance before selecting tires. The 205/45R17 options also include rim-width guidance, so a car with non-stock wheels deserves closer measurement rather than assuming the original trim size automatically suits the current setup.
What should I inspect before driving a 2020 Mazda MX-5 Miata on new tires?
Before driving a 2020 Mazda MX-5 Miata on new tires, inspect the wheel size, confirm the installed tire size matches the trim, and check for proper air pressure, bead seating, and overall clearance. It is also wise to look over the suspension and alignment if the old tires showed uneven wear.
A short road test should follow with attention to rubbing, vibration, or steering pull. Low-profile sizes like 205/45R17 and 195/50R16 make wheel condition and alignment quality more noticeable, so catching clearance or setup issues early helps protect both the new tires and the way the car drives.
How often should tires on a 2020 Mazda MX-5 Miata be inspected?
Tires on a 2020 Mazda MX-5 Miata should be inspected regularly, not just at replacement time. Pressure, tread condition, sidewall damage, punctures, and uneven wear deserve routine checks, especially on a lightweight sports car where tire condition strongly affects steering feel and overall balance.
Cars that are driven infrequently should also be checked for age-related cracking, flat-spotting, and air loss before longer outings. Seasonal storage, prolonged sun exposure, and long stationary periods can affect even a low-mileage MX-5 Miata, so consistent inspection matters whether the car is a daily driver or a fair-weather roadster.
