305 is the tyre width in millimetres, 35 is the aspect ratio (sidewall height is 35% of 305, roughly 107 mm), R means radial construction, and 22 is the wheel diameter in inches. Matching these numbers exactly is essential for correct fitment on your rims.
Check the tyre placard on the door jamb or your handbook and match the required load index and speed rating. This size is often specified with higher load ratings (commonly in the 109 to 116 range) and may be marked XL or reinforced for heavier vehicles. Never choose a lower rating than specified, and replace in axle pairs so handling and braking stay consistent.
Only if the manufacturer allows it or a qualified fitter confirms there is enough clearance for steering lock, suspension travel and wheel arch space. A wider 305 section can rub on liners or suspension components, and it also needs an appropriately wide rim. If your car uses a staggered set-up, confirm the approved front and rear sizes before ordering.
Most tyres in this size are summer or ultra-high-performance patterns, with fewer all-season choices and limited winter availability. If you want year-round capability, look for an all-season tyre with the 3PMSF marking where available, and make sure the load index and speed rating still meet your vehicle requirements. For regular cold-weather driving, consider whether a smaller winter wheel package is recommended for your model.
This size typically suits wider rims, often around 10.5 to 12.0 inches depending on the specific tyre model. The correct rim width range is listed on the tyre manufacturer datasheet, and staying within it helps maintain the intended contact patch, steering feel and wear pattern. If you are unsure, check your wheel markings or ask a fitter to confirm before buying.
