Originally Posted by
chensleyrc1
Nice, I start mine at the same size (39.75 rears and 39.50 fronts) and replace the fronts at 39.0. But I am getting about 5-7 runs on them, with the 3rd or 4th run being the best, at least with the Ultis.
The Ulti has a smaller rim then the CRC rims in the front, it's a 37.8mm (roughly). I actually ran Pink Ulti's in 13.5 and was very happy with them, we ran 39.5f/40.25r, again only 1 run though. I ran Ulti tires quite a bit last year and was very happy with them. No complaints at all and the 3 pairs per bag packaging is wonderful! The only thing I don't like is that the rim surface area does not allow for quite as nice of glue job as the larger CRC rim does. Again, this is just my opinion though. I can't imagine anyone would be displeased with the Ulti tires in general.