When I had stock 195 tires on my 400E, I could easily slip my tires from stand still, even at 40-50 kmph. After I put on 215 tires, haven't slipped tires on dry road yet, though I feel on wet road I can slip the tires at any speed.

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99 BMW 540i 6-speed 110K Km
03 SAAB 9-5 wagon 80K Km
92 400E (Sold) 245K km
Still missing the days with the Benz, it kept me busy.