If guys find that they don't work as well on an 18" wheel, there are solutions besides buying all new wheels. Swap the outer third from a 4 off onto your 3 off and now you have a 17x3. 5 off onto the 4 off and 6 off onto your 5. Sorry but you would have to buy a new outer third, or complete 6 off wheel. Good thing the wing guys run a lot of 6 off RR's and they are available used.

I see a lot of teams running wheels that should probably be replaced or at least have new centers. I had three cracked centers over the course of last year and our wheels were not that old. Fortunate to catch them during my weekly inspection and not after they had caused a crash.

Like any other change, this will take some experimenting and a little creativity to get the most out of what we have to work with.