Quote:
Originally Posted by BimmerF30_335i
i have 245-40-19 and 275-35-19 and had it at 35 front and 38 rear, but after tires warmed up, they typically increased to 38 and 41 and i felt the car was too stiff and would feel every bump. I have since reduced it to 32.5 and 35.5 (increases to abut 35.5 and 38.5) and have found it to be much more comfortable. but I'm not sure if its bad to be 2.5 psi under the recommended pressure
i live in texas though so temps can get pretty high
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I almost arrived at the same figures on my new 235/40 19 and 275/35/19. Lowered to 32 front (Michelin PSS4), and the car became really moody, and mushy. Very much so. Temps here, 13C - 30C. But my 335i M Perf is also 3960lbs, with Adaptive M tuned for hard 20" Pirellis. At 35F 38R I seem to have OK results. however, have yet to run them a really warm day pass 75F, just got them! But 32 front was quite mushy.