flaps7 Posted November 6, 2015 Share Posted November 6, 2015 My car is currently fitted with 215/70R16 tyres and this is the size recommended for the car but I would like to consider a change in profile to tyre size 215/65/R16. I appreciate the reduced overall diameter / ride height but are there other considerations that mean I should stick with the size currently on the car? The car is a C-Crosser so ride height is really not a worry. The reason for thinking about changing profile is that some tyres are cheaper in 65 and some tyres are only available in 65.Rick Link to comment Share on other sites More sharing options...
tbird Posted November 6, 2015 Share Posted November 6, 2015 if you went to215/65 R17 you would keep diameter in spec, but not sure if would help with tyre prices, Think manufacturers say 2% change in Diameter maximum, so I guess your proposed change -3% would technicaly invalidate your comprehensive insurance, might have some effect on ESP/Traction control, possibly cause some oversteer. general change to steering geometry. Tim Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted November 6, 2015 Member Share Posted November 6, 2015 I assume you're doing them all at once...Speedometer calibration, appearance, fuel consumption...Considering a different set for winter?Jonathan Link to comment Share on other sites More sharing options...
flaps7 Posted November 6, 2015 Author Share Posted November 6, 2015 Good point about insurance.All 4 tyres at the same time, calibration doesn't seem too bad and could live with reduced fuel consuption, don't think I would notice the change in diameter (although ca't be sure). Have considered winter tyres/wheels but not a cheap option. Got myself a shovel and snow socks for those more challenging conditions.Think will keep with size I have; don't want to give insurance company any more wriggle room than they find already.Thanks for input.Rick Link to comment Share on other sites More sharing options...
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