11-11-2018, 11:00 PM | #23 | |
Colonel
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One thing I have seen a lot of in the F80 forums is that they have a taller tyre in the rear - their stock sizes are all 20mm wider at the rear with the same aspect ratio. This means that if someone runs square all round or goes up wider at the rear and lowers the aspect ratio such as going from 255/35r19 and 275/35r19 to 295/30r19 in the rear only without changing the fronts they go from 2.1% taller in the rear to being 0.3% shorter in the rear. This confuses the hell out of the traction control when you're accelerating hard, even if you're not actually losing grip. Perhaps if your PZero's are new and the PSS are old and you're running stock sizes this could be a problem? With the stock sizes assuming brand new tyres the car has 1.3% shorter rear tyres which it is programmed for but with the 305's at the rear that drops to only 0.3% difference which may help more with traction systems - not so much traction itself
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SCOTT26 "So as an admirer of the M5 and a potential customer of an M5 Touring. I would run naked around the streets of Garching if they were to offer one."
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