steve b Posted March 23, 2007 Report Share Posted March 23, 2007 I have upped the power on my MX5 to 250bhp, I have been wondering about fitting wider rear tyres. I see many high power rear drive cars have wider rear tyres than up front and wonder if this setup would be beneficial for the mx5 now rather than a low 133bhp its got 250bhp going through the rear wheels. or will it just make it "understeery"? Quote Link to comment Share on other sites More sharing options...
Tony Posted March 23, 2007 Report Share Posted March 23, 2007 :closedeyes:--> QUOTE(steve b @ Mar 23 2007, 05:22 PM) <{POST_SNAPBACK}> I have upped the power on my MX5 to 250bhp, I have been wondering about fitting wider rear tyres. I see many high power rear drive cars have wider rear tyres than up front and wonder if this setup would be beneficial for the mx5 now rather than a low 133bhp its got 250bhp going through the rear wheels. or will it just make it "understeery"? Your intentions are wise but I'm not saying anything jon who runs a track MR2 has just finished his track day with new "wider rear tyres" and a new wim track set-up for his car. Both Sam@tdi and myself worked on the calibration, mainly dismissing rear tyre saturation so i feel jon's report holds more "hands on experience". We await that report. I must say though. The MX5 having a "i believe" perfect dynamic index of 1.00, maybe 1.10? would be much.....much easier to math! Quote Link to comment Share on other sites More sharing options...
steve b Posted March 23, 2007 Author Report Share Posted March 23, 2007 I was thinking of picking up a set of pre 2003 MR2 roadster wheels with the staggered width setup, but not the diameter change. I'm currently running 15x7 ET 37 with 195/50's, from the stock 14x6 ET45 185/55. The mr2 wheels are 15x6 45ET and 15x6.5 ET 45, so I was thinking 195 up fron 205 rear. Centre bore & stud pattern are correct, as the mr2 wheels corrode there are plenty of sets available very cheaply so I would think they'd be ideal as a set of trackday wheels. They are also nice and light in comparison to cheap aftermarket items. Quote Link to comment Share on other sites More sharing options...
Tony Posted March 23, 2007 Report Share Posted March 23, 2007 --> QUOTE(steve b @ Mar 23 2007, 06:31 PM) <{POST_SNAPBACK}> I was thinking of picking up a set of pre 2003 MR2 roadster wheels with the staggered width setup, but not the diameter change. I'm currently running 15x7 ET 37 with 195/50's, from the stock 14x6 ET45 185/55. The mr2 wheels are 15x6 45ET and 15x6.5 ET 45, so I was thinking 195 up fron 205 rear. Centre bore & stud pattern are correct, as the mr2 wheels corrode there are plenty of sets available very cheaply so I would think they'd be ideal as a set of trackday wheels. They are also nice and light in comparison to cheap aftermarket items. jon has expressed his day here: http://www.wheels-inmotion.co.uk/forum/ind...ic=1039&hl= have a read and come back for personal opinion/questions. Quote Link to comment Share on other sites More sharing options...
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