Mini Cooper Problems

THE last time I recommended a reader swap his run-flats for regular tyres I was scolded by BMW's spin doctor, saying that it mustn't be done for safety reasons. What he was saying was that the run-flat tyres have a very stiff sidewall, which is the reason for the appalling ride of course. The engineers take that into consideration when tuning the suspension and if you swap to regular tyres, which have a much softer sidewall, you will upset that tuning. He's right, of course. The handling may not be as good with the regular tyres, but if you're not looking for the ultimate handling from your car it will be fine. The ride will be much better and there are those in the trade who believe the handling is also improved. All foam repairers are about the same, but talk to a retailer for advice. Be aware, however, that when used the foam creates a sealing layer inside the tyre that is difficult to remove to repair the tyre.

I DON'T believe you will have a problem if the rear bumper isn't fitted, but the best thing to do is to go to your nearest roadworthiness checking station and ask the tester. You can get a guide at your local registration authority.