Originally Posted by KarateManAZ
When you run shorter tires you will trap at a lower speed. When I was stock I would run my street tires and trap at 97ish and on my slicks I would trap at 95ish
It depends on your setup. Since a shorter tire gives you a deeper effective gear ratio, you will accelerate faster - this is a given. If you still have rpms left at the end of the track with the tall tires, then you will be able to take advantange of those available rpms with the shorter tire and potentially trap higher. Specifically, if it takes you 1320 feet to accelerate to 97mph with the tall tires and you are now accelerating faster with the shorter tires, you should hit the same 97mph around 1200 feet and then surpass it by the 1320 mark - this is all providing you haven't run out of rpm. The only way you should trap slower is if you ran out of motor because you now have too
deep of a gear.