This size is most often seen on performance fitments, commonly as a front tyre on Porsche 911 variants with a staggered wider rear size. It can also be specified on certain high-spec coupe and saloon wheel packages. Always confirm the exact size and any approval markings on your door placard or handbook before ordering.
Many 245/30 R20 options come with higher speed ratings (often W or Y) and may be offered in XL to meet the demands of performance cars. Use the vehicle placard or handbook as the final reference and match the listed load index and speed rating exactly. Avoid choosing a lower rating, even if the tyre is cheaper, as it can affect safety and insurance.
If you drive a Porsche model that specifies approved tyres, look for the N-marking (such as N0, N1) on the sidewall when selecting 245/30 R20. Keeping the same approval type across the axle helps preserve the intended balance and stability. If your car does not require an approval marking, you can shop more freely by performance and budget.
XL (extra load) versions are common in 245/30 R20 because the low-profile sidewall and higher performance loads often call for a reinforced casing. Choose XL only if your vehicle specification allows or requires it, as shown on the placard or handbook. If your vehicle specifies standard load, select the matching construction to maintain the intended ride and handling.
Replacing in pairs on the same axle is usually the better choice for 245/30 R20, especially on performance cars where grip balance is critical. If you replace a single tyre, match the same pattern and specification, and keep tread depth differences small to avoid handling changes. On AWD or staggered performance setups, follow the vehicle maker guidance and consider replacing the axle pair if the remaining tyre is noticeably worn.
