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BMW 5 Series GT - which tyres offer the best comfort?

I need some new tyres for my BMW 530d GT. It is currently fitted with 245/45/R19 front and 275/40/R19 rear. These need replacing soon and I am thinking of fitting BMW recommended 245/50/R18's front and rear. What ride difference will I get and also improved wear and tear?

Asked on 25 March 2015 by bexley adge

Answered by Honest John
You'll obviously have to change the wheels as well and might get a bit more oversteer with less rubber on the back. You will also need a 4 way laser alignment for the new wheels and tyres at a branch of www.alignmycar.co.uk and the steering angle sensor re-set. But ride and wear rates should both be better.
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