Use the registration search tool above for the most accurate match, or check the tyre size printed on your current tyre sidewall (for example 225/45 R17). You can also find the approved sizes on the driver’s door jamb label or in the owner’s handbook. Some SLKs have different front and rear sizes, so check both axles.

It’s best to keep the same brand and pattern on each axle, especially on a performance car like the SLK where grip balance matters. Mixing front to rear is possible, but try to keep similar type and performance level (for example, avoid pairing a budget tyre with a premium tyre on the same axle). Always match the correct size, load index, and speed rating.

Some vehicles may be equipped with run-flat tyres depending on wheel and trim, but many SLKs are fitted with standard tyres. Only choose run-flats if your car and wheels are designed for them and you are comfortable with the firmer ride. If switching away from run-flats, consider how you’ll manage a puncture, such as carrying a mobility kit.

UK law requires at least 1.6mm tread depth across the central three quarters of the tyre, but many drivers replace around 3mm for better wet grip. Replace tyres sooner if you spot cuts, bulges, cracking, or uneven wear, or if the car feels less stable in the wet.

You pick a nearby fitting centre and appointment slot, then your tyres are delivered there ready for installation. On the day, bring your locking wheel nut key if your SLK has locking bolts. If your car has TPMS, the fitter will handle the valve or sensor work as needed, and you can ask about wheel alignment if you’ve noticed uneven tyre wear.