Need Help For Change over to slicks for the track

496dart said
ok--i see.

for reference, my dart had 28.5 x 11.5 MT tires with a 410 and trapped at 6200 .

yea see thats whats weird! with 3.91's i figured to be in the 5500 range... but like you said i would really hate to go with 4.88's and there to tall but cant afford to try both lol...