[stickman]

I recently changed my chain and sprockets on my '04 636 and went up one tooth in the back and down one in the front. I am wondering just how much that may throw off my speedometer? I know that they aren't that accurate to begin with but is it much worse now? Is there a formula or anything to work out the % difference in speed based upon changing the number of teeth on the sprockets?

 

[stickman]

Thanks alot.....I'm going to check that out