Check the tyre size printed on your current tyre sidewall and compare it with the vehicle handbook and the door-jamb placard. The markings should read 325/40 R22, where 325 is the width in mm, 40 is the aspect ratio, and 22 is the wheel diameter in inches. If your vehicle runs a staggered setup, confirm the front and rear sizes separately before ordering.
Use the load index and speed rating specified on your vehicle placard or in the handbook and do not select a lower rating. Many 325/40 R22 applications are on heavier SUVs, so the correct load rating is critical for stability, braking and durability. If your current tyres are marked XL or reinforced, match that specification unless your vehicle documentation states otherwise.
Yes, but only if your vehicle manufacturer permits a staggered fitment and the overall rolling radius is compatible, especially on AWD systems. Mixing sizes without guidance can affect traction control, speedometer accuracy and drivetrain wear. If you are unsure, match the existing front and rear sizes exactly or check approved fitment data before buying.
Options exist, but the range can be more limited than in smaller diameters, so it is worth filtering by season early. Summer tyres prioritise dry and wet grip in mild temperatures, winter tyres with the 3PMSF marking are designed for cold weather and snow, and all-season tyres aim to cover UK conditions year-round. Choose the type that best matches your mileage, local climate and whether you travel in colder regions.
Follow the pressure listed on your vehicle placard, as it accounts for your vehicle’s weight, axle loads and intended use. Wide 325/40 R22 tyres can be sensitive to under-inflation, which can increase shoulder wear and heat build-up. Check pressures when the tyres are cold, and if your car has TPMS, recalibrate it after fitting or pressure changes.
