Confirm the approved size in your handbook or on the door jamb fuel flap sticker, then match the wheel diameter to R12 and the profile and width to 155/70. Also check the minimum load index and speed rating listed for your vehicle, as you should meet or exceed those figures. If your current tyres differ, verify clearance around suspension and arches before ordering.
Choose a load index and speed rating that meets or exceeds the manufacturer requirement shown on the vehicle placard or handbook. Many tyres in this size are sold with ratings such as 73T, but your car may specify something different depending on model and use. Matching the correct rating helps ensure safe carrying capacity, compliant performance, and straightforward MOT checks.
It may be possible, but only if your vehicle manufacturer approves it and the wheel width is suitable. The extra width can affect arch clearance and steering at full lock, and even small changes in rolling circumference can influence the speedometer reading. If you are unsure, check the approved tyre sizes list for your exact model before buying.
All-season choices can be more limited in 12-inch sizes, but they do exist from selected brands and can be a good fit for UK driving where temperatures fluctuate. If you drive year-round and want one set that copes with colder, wet conditions as well as warmer months, an all-season tread and compound can be a practical option. If availability is tight, compare reputable summer tyres and prioritise wet grip.
Replacing in axle pairs is recommended so the handling and grip remain balanced, especially in wet conditions. Keep the same size, load index and speed rating across the axle, and ideally match the same brand and tread pattern. If you are replacing only two, fitting the newer pair to the rear is commonly advised for stability unless your vehicle manufacturer specifies otherwise.
