2023 Porsche 718 Cayman Tires
The 2023 Porsche 718 Cayman sits deep in Porsche’s modern mid-engine sports car tradition, blending compact dimensions with serious chassis precision and trim-specific performance intent. On a car this focused, tire fitment is not a minor detail, because wheel diameter, front-to-rear stagger, and model variation all shape how the Cayman is set up. This year spans multiple primary radial sizes across 18-, 19-, and 20-inch wheels, with different front and rear fitments depending on the version. Available choices range from blackwall ultra-performance options to select redline and raised white letter presentations in certain rear sizes. The key is matching the exact sub-model and axle position before comparing series, sidewall style, and road-use priorities.
Which Tire Size Is Right for The 2023 Porsche 718 Cayman
The 2023 Porsche 718 Cayman does not use one universal tire size. Eight primary radial sizes appear across different trims, axle positions, and wheel diameters, so the first step is identifying the exact sub-model and whether you are shopping for the front or rear. Confirming wheel diameter matters just as much, since this Cayman range uses 18-, 19-, and 20-inch fitments with staggered setups on many configurations.
A 235/35R20 tire uses a 235 millimeter section width, a 35-series aspect ratio, radial construction, and a 20-inch rim diameter. On the 2023 Porsche 718 Cayman, this size serves as a front fitment on several configurations where a low-profile 20-inch setup is part of the car’s staggered layout. Product choice in this size centers on blackwall performance tires from Nitto and BFGoodrich, including the NT555 G2 and g-Force Phenom T/A. This size is the right place to start when your Cayman is equipped with 20-inch front wheels rather than 18- or 19-inch alternatives.
Explore 235/35R20 TiresA 235/40R19 tire keeps the same 235 millimeter nominal width but uses a taller 40-series profile on a 19-inch rim. For the 2023 Porsche 718 Cayman, it appears as a front size on 19-inch staggered combinations rather than as a universal front fitment across the model range. Available product selection in this size is focused and blackwall-oriented, with BFGoodrich g-Force Phenom T/A coverage. It is the correct size to evaluate only after confirming that the car carries 19-inch front wheels and not the 18- or 20-inch front setup.
Explore 235/40R19 TiresA 235/45R18 tire uses a 235 millimeter section width, a 45-series sidewall, and radial construction for an 18-inch wheel. Within the 2023 Porsche 718 Cayman range, this size belongs to the 18-inch front fitment used on the Base front axle rather than the larger-wheel configurations. BFGoodrich offers several blackwall choices here, including g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A, giving the size more series variety than some other Cayman front applications. This size is worth targeting when retaining the original 18-inch front wheel setup is part of the plan.
Explore 235/45R18 TiresA 265/35R20 tire uses a 265 millimeter section width, a 35-series profile, radial construction, and a 20-inch rim diameter. On the 2023 Porsche 718 Cayman, it functions as a rear fitment on several 20-inch staggered setups, making it distinct from the front sizes paired with it. Product choices are broader here, including blackwall options from Nitto and BFGoodrich plus Pro-Trac Street Pro III versions in redline and RWL sidewall styles. This is the size to compare when your Cayman uses the common 20-inch rear arrangement rather than 18-, 19-, or GT4-spec rear fitment.
Explore 265/35R20 TiresA 265/40R19 tire pairs a 265 millimeter width with a 40-series profile on a 19-inch wheel. For the 2023 Porsche 718 Cayman, this is a rear size tied to 19-inch staggered applications, so it should be matched with the proper 19-inch front fitment rather than mixed casually with other wheel packages. Blackwall performance choices include Nitto NT555 G2 and BFGoodrich g-Force Phenom T/A. This size matters most when preserving a 19-inch rear setup and when confirming that the rear wheel diameter has not been changed from the car’s intended configuration.
Explore 265/40R19 TiresA 265/45R18 tire combines a 265 millimeter section width with a 45-series profile and radial construction on an 18-inch rim. On the 2023 Porsche 718 Cayman, it is the rear companion to the 18-inch front fitment used on the Base rear axle, not a size shared throughout the full model range. No applicable product assortment appears here, so the main fitment priority is keeping the correct rear size paired with the proper front and wheel diameter. Use this size only after confirming an 18-inch rear wheel package on the car.
Explore 265/45R18 TiresA 245/35R20 tire uses a 245 millimeter section width, a 35-series profile, radial construction, and a 20-inch rim. On the 2023 Porsche 718 Cayman, this size is used at the front on GT4 and GT4 RS center-lock front applications, separating it from the narrower front fitments used elsewhere in the Cayman lineup. Available blackwall choices include BFGoodrich g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, and Nitto NT555 G2. This size should be evaluated when the car is one of the GT4-based front configurations and still carries its correct 20-inch front wheel setup.
Explore 245/35R20 TiresA 295/30R20 tire combines a 295 millimeter section width with a very low 30-series profile on a 20-inch rim. For the 2023 Porsche 718 Cayman, it serves as the rear fitment for GT4 and GT4 RS center-lock rear applications, making it a specialized staggered rear size rather than a general Cayman rear option. No applicable product assortment appears in this size here, so the main selection task is confirming the exact trim and rear wheel specification first. It belongs on the shortlist only when the car is equipped with the GT4-family 20-inch rear setup.
Explore 295/30R20 Tires2023 Porsche 718 Cayman Sub-Model Tires
Sub-model fitment on the 2023 Porsche 718 Cayman varies by trim, axle position, and wheel diameter, so tire selection is not interchangeable across the full range. Identifying the exact Cayman version matters first, especially on staggered setups where front and rear sizes differ and GT4-based models move to their own 20-inch combinations.
2023 Porsche 718 Cayman Base Front
The Base front setup uses one of three radial front sizes depending on whether the car is equipped with 18-, 19-, or 20-inch wheels. Tire selection starts with confirming the wheel diameter on the front axle, then choosing among the available product options in that specific size.
2023 Porsche 718 Cayman Base Rear
The Base rear setup follows the same wheel-diameter logic as the front, with three possible radial rear sizes matched to 18-, 19-, or 20-inch wheels. Keeping the rear size aligned with the corresponding front fitment is essential on this staggered Cayman configuration.
2023 Porsche 718 Cayman GT4 Front
The GT4 front uses a dedicated 245/35R20 radial fitment rather than the narrower front sizes used on other Cayman trims. That makes the decision less about width choice and more about selecting the right series and confirming the 20-inch front wheel setup remains in place.
- 245/35R20 — Radial · 20 in
2023 Porsche 718 Cayman GT4 RS (Center Lock) Front
The GT4 RS center-lock front application also uses 245/35R20 radial tires, separating it from the standard Cayman front sizes. Tire shopping here should stay focused on that exact 20-inch front fitment and on products that suit the car’s intended road use and wheel configuration.
- 245/35R20 — Radial · 20 in
2023 Porsche 718 Cayman GT4 RS (Center Lock) Rear
The GT4 RS center-lock rear setup uses a 295/30R20 radial, a much wider rear tire than the rear fitments found on Base, S, T, or GTS 4.0 versions. Confirming rear wheel diameter and axle position is critical before comparing alternatives in the broader Cayman family.
- 295/30R20 — Radial · 20 in
2023 Porsche 718 Cayman GT4 Rear
The GT4 rear uses the same 295/30R20 radial size as the GT4 RS center-lock rear application. Selection centers on maintaining the correct rear specification for the GT4 staggered setup rather than substituting one of the narrower rear sizes used elsewhere in the lineup.
- 295/30R20 — Radial · 20 in
2023 Porsche 718 Cayman GTS 4.0 Front
The GTS 4.0 front uses a 235/35R20 radial fitment. That keeps the focus on comparing available 20-inch front tire choices in the proper size instead of sorting through the 18- and 19-inch front sizes used on other Cayman configurations.
- 235/35R20 — Radial · 20 in
2023 Porsche 718 Cayman GTS 4.0 Rear
The GTS 4.0 rear uses a 265/35R20 radial, matching the 20-inch staggered layout used on several other Cayman trims. Tire selection here comes down to the correct rear size first, then sidewall and series differences among the available products.
- 265/35R20 — Radial · 20 in
2023 Porsche 718 Cayman S Front
The Cayman S front can use either a 235/35R20 or 235/40R19 radial depending on wheel diameter. The first check is whether the car has 20-inch or 19-inch front wheels, because that determines the correct size before any product comparisons begin.
2023 Porsche 718 Cayman S Rear
The Cayman S rear uses either 265/35R20 or 265/40R19, again depending on the wheel package installed on the car. Matching the rear size to the actual rear wheel diameter and the corresponding front setup is the key fitment step.
2023 Porsche 718 Cayman T Front
The Cayman T front uses a 235/35R20 radial tire. That simplifies the search to the available 20-inch front options in this size, with the main decision centered on tire series and intended driving use.
- 235/35R20 — Radial · 20 in
2023 Porsche 718 Cayman T Rear
The Cayman T rear uses a 265/35R20 radial fitment. Buyers can focus on the available rear products in that exact size, including differences in sidewall presentation, while still confirming the car remains on its proper 20-inch rear wheel setup.
- 265/35R20 — Radial · 20 in
Important Fitment Notes
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:
- Wheel modifications (wider rims, offset changes, aftermarket wheels)
- 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 2023 Porsche 718 Cayman Tires for Sale
Available 2023 Porsche 718 Cayman tire choices focus on radial performance fitments from BFGoodrich, Nitto, and Pro-Trac. Depending on size, the comparison may involve blackwall options, BFGoodrich g-Force series differences, Nitto NT555 G2 fitments, or select redline and raised white letter rear tires in 265/35R20.
Nitto NT555 G2 | 235/35ZR20XL 92W
Nitto - Nitto NT555 G2
BFGoodrich g-Force Phenom T/A | 235/35ZR20 92Y
BFGoodrich - g-Force Phenom T/A
BFGoodrich g-Force Phenom T/A | 235/40ZR19 96Y
BFGoodrich - g-Force Phenom T/A
BFG g-Force COMP-2 A/S | 235/45ZR18 98W XL
BFGoodrich - g-Force Comp 2 AS
BFG g-Force Sport COMP-2 | 235/45ZR18 98W XL
BFGoodrich - g-Force Sport Comp 2
BFGoodrich g-Force Phenom T/A | 235/45ZR18 98W
BFGoodrich - g-Force Phenom T/A
Nitto NT555 G2 | 265/35ZR20XL 99W
Nitto - Nitto NT555 G2
BFGoodrich g-Force Phenom T/A | 265/35ZR20 99Y
BFGoodrich - g-Force Phenom T/A
265/35ZR20 Pro-Trac Street Pro III | Redline
Pro-Trac - Street Pro III
265/35ZR20 Pro-Trac Street Pro III | RWL
Pro-Trac - Street Pro III
Nitto NT555 G2 | 265/40ZR19XL 102W
Nitto - Nitto NT555 G2
BFGoodrich g-Force Phenom T/A | 265/40ZR19 102Y
BFGoodrich - g-Force Phenom T/A
BFG g-Force Sport COMP-2 | 245/35ZR20 95W XL
BFGoodrich - g-Force Sport Comp 2
BFG g-Force COMP-2 A/S | 245/35ZR20 95W XL
BFGoodrich - g-Force Comp 2 AS
Nitto NT555 G2 | 245/35ZR20XL 95W
Nitto - Nitto NT555 G2
BFGoodrich g-Force Phenom T/A | 245/35ZR20 95W
BFGoodrich - g-Force Phenom T/A
Frequently Asked Questions
Tire questions for the 2023 Porsche 718 Cayman usually come down to staggered sizing, wheel diameter, trim-specific fitment, and how to compare available radial tire options by series, sidewall style, and intended use.
Tire Size & Fitment
What tire size fits a 2023 Porsche 718 Cayman?
The 2023 Porsche 718 Cayman uses several tire sizes rather than one universal fitment. Front sizes include 235/45R18, 235/40R19, 235/35R20, and 245/35R20, while rear sizes include 265/45R18, 265/40R19, 265/35R20, and 295/30R20. All of them are radial sizes.
The correct choice depends on the exact trim and axle position, since the Cayman uses staggered front-to-rear setups and different wheel packages. Start by identifying the sub-model, then confirm whether the car has 18-, 19-, or 20-inch wheels before comparing tire options in the matching front or rear size.
What size rim does a 2023 Porsche 718 Cayman use?
The 2023 Porsche 718 Cayman uses 18-inch, 19-inch, and 20-inch rim diameters depending on trim and wheel package. Those rim diameters correspond to the tire sizes ending in R18, R19, and R20, so the wheel diameter is built directly into the size itself.
Checking the actual wheel on the car matters because the Cayman range does not stay with one diameter across every version. A Base or S car may be equipped differently from a GT4-based model, and front and rear sizes should stay matched to the wheel package rather than chosen independently.
Why does the 2023 Porsche 718 Cayman have more than one tire size?
The 2023 Porsche 718 Cayman has more than one tire size because fitment changes by trim, axle position, and wheel diameter. Base, S, T, GTS 4.0, GT4, and GT4 RS applications do not all share the same setup, and several of them use staggered front and rear combinations.
That means the first tire decision is not brand or series, but identifying the exact Cayman configuration. Once the trim and wheel diameter are confirmed, the remaining comparison becomes much easier because you can narrow the search to the proper front or rear size instead of sorting through the entire Cayman range.
Choosing the Right Tire
What should I consider when choosing a 2023 Porsche 718 Cayman tire?
Start with the exact tire size for the correct axle, because the 2023 Porsche 718 Cayman uses trim-specific staggered fitments across 18-, 19-, and 20-inch wheels. After size is confirmed, compare radial construction details such as tire series, sidewall style, rim-width specification where stated, and load figures where they appear.
Intended use also matters. A Cayman that sees mostly fair-weather road driving may lead you toward one series, while a car covering broader conditions may push attention toward another. Keeping the front and rear tires aligned with the vehicle’s wheel package is more important than chasing a style or brand first.
What sidewall styles are available for 2023 Porsche 718 Cayman tires?
Most available 2023 Porsche 718 Cayman tire options use a blackwall sidewall. In 265/35R20, there are also Pro-Trac Street Pro III choices with redline and RWL sidewall treatments, giving that rear size a more distinctive appearance than the other Cayman fitments shown here.
Sidewall style should be chosen after the correct size is locked in, not before. A redline or raised white letter look may suit a custom presentation, but those options appear only in a specific rear size, so trim, axle position, and wheel diameter still determine whether that appearance choice belongs on the car.
What brands offer tires for the 2023 Porsche 718 Cayman?
BFGoodrich, Nitto, and Pro-Trac offer applicable tires within the 2023 Porsche 718 Cayman size range shown here. Availability depends on the exact size, with BFGoodrich covering several front and rear applications, Nitto appearing in select 19- and 20-inch fitments, and Pro-Trac appearing in 265/35R20.
Brand selection should come after confirming the proper size for the car’s trim and axle. Once that is settled, compare each option by tire series, sidewall treatment, and any stated rim-width or load details, since those factors often tell you more about suitability than the brand name alone.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2023 Porsche 718 Cayman?
Yes, modifications can affect tire fitment on a 2023 Porsche 718 Cayman. Aftermarket wheels, changes in wheel width, suspension lowering, alignment changes, or body modifications can alter the space available for the tire even when the nominal size matches a standard Cayman fitment.
That is especially important on a low-profile, staggered sports car where front and rear sizes are already tightly defined. Check actual wheel diameter, width, and clearance at full steering lock and suspension travel before changing from the tire size associated with the car’s current trim and wheel setup.
What should I inspect before driving a 2023 Porsche 718 Cayman on new tires?
Before driving a 2023 Porsche 718 Cayman on new tires, inspect that each tire matches the correct axle position, size, and wheel diameter. Then check inflation pressure, valve condition, wheel condition, and the basic tire condition for cuts, bulges, or any sign of mounting damage.
A short, careful road test helps confirm there is no rubbing, vibration, or unexpected contact under steering or suspension movement. On a Cayman with staggered sizing, it also pays to recheck that the front and rear pairs were not mixed, since the model uses different widths and profiles by axle.
What should I check before a longer drive in a 2023 Porsche 718 Cayman?
Before a longer drive in a 2023 Porsche 718 Cayman, verify tire pressure, tread condition, and the absence of cracks, punctures, cuts, or uneven wear. It is also wise to confirm that the car is still wearing the correct front and rear sizes for its trim and wheel package.
Longer trips put more heat and sustained speed into the tires, so any marginal issue becomes more important. A quick look at wheel condition, recent air loss, and visible clearance around the tire can prevent surprises, especially if the car has changed hands or has been fitted with different wheels previously.