Confirm it against the tyre size printed on your current sidewall, then cross-check the vehicle handbook or the door jamb placard. Some vehicles use this as a rear fitment in a staggered set-up, so make sure the front and rear sizes match what the manufacturer specifies. If your car has different front and rear sizes, keep the correct size on each axle to maintain the intended handling and stability systems.
Use the vehicle placard or handbook as the final reference and choose the same load index and speed rating as specified, or higher if required by your insurer or usage. This size is often offered with higher speed ratings and XL (extra load) versions, which can be essential on heavier, high-powered vehicles. Avoid fitting a lower load index or speed rating, as it can affect safety, legality and MOT suitability.
Yes, but availability can be more limited than in smaller sizes because this fitment is common on performance vehicles with larger wheels. If you drive regularly in cold conditions, prioritise tyres marked 3PMSF for winter capability, and consider fitting a matched set across the axle for consistent grip. When comparing options, check wet grip ratings and noise levels as well, as both can vary noticeably in ultra-low profile tyres.
Only switch if your vehicle manufacturer allows it and you have a suitable mobility plan, as runflats have stiffer sidewalls and can change ride comfort and steering feel. If your car was supplied with runflats, it may be tuned for them, so check the handbook and any tyre pressure monitoring system requirements before changing. For best balance and predictable handling, replace tyres in pairs on the same axle and avoid mixing runflat and non-runflat on that axle.
Replace in pairs on the same axle if the other two still have healthy, even tread and there is no damage. Because this size is frequently part of a staggered set-up, many drivers replace the rear pair more often than the fronts, but it depends on your car and driving style. If tread depths are mismatched or wear is uneven, replacing all four and checking wheel alignment can restore consistent grip and braking performance.
