Many new cars no longer include a full-size spare tyre. Instead, manufacturers fit a tyre repair kit or a compact temporary spare. Understanding the limitations of each option before you need it is the difference between being prepared and being stranded.
What a Tyre Repair Kit Can and Cannot Do
Tyre repair kits (foam sealant + compressor) work only for slow punctures — small holes under 4mm in the tread area. They are useless for blowouts, sidewall damage, or punctures near the shoulder. The sealant also contaminates the tyre, making professional repair impossible and costing more in the long run. After using a kit, drive no faster than 50mph and replace the tyre immediately — it is a temporary measure only.
Compact Spare ('Space-Saver') Pros and Cons
A compact temporary spare (the narrow, smaller wheel found in some cars) allows normal driving to the nearest garage but is limited to 50mph and typically 50 miles of use. It is far superior to a foam kit for any serious incident. If your car came with a full-size spare, congratulations — use it without restriction and replace it as soon as possible. If you do not have any spare, consider carrying a portable compressor and puncture sealant as a minimum.
Key Takeaways
- Check whether your car has a spare tyre, compact spare or repair kit — know before you need it
- Compact spares are speed-limited to 50mph — never use them on a motorway at speed
- Sealant-treated tyres cannot be patched — always flag this to the fitter
- Mobile tyre fitting is faster and cheaper than towing — save our number
Knowing your vehicle's emergency tyre provision means no surprises when things go wrong. If you need help in any situation, Multi Mobile Tyres is one call away — no spare required.
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