> Depends on the car. Repco/Axxis MMs easily last a year of street/track/auto-x events on the light 4KQ - BTDT. I would think the A4 would be similar. They _melt_ on the 5KTQ..... peeeee-eeeew! Then I'd expect them to melt on the A4 too. 5kCSQ and A4 weigh within 100lb of each other. Orin.