Originally Posted by
performula
With 17.5t and the 72t spur, what pinion variation would I need then, that is the only class they run in 1/12. I know this is frowned upon but I plan on starting with full size tires. It makes me cringe to think I'd need to shred half the tire off, plus I don't have a truer. I believe they use Jacos as spec tires. I appreciate the help.
If your talking about 5280 then:
The tires for 1/12 are CRC Spec - Purple Stripe
People at the track can help you cut them
41.5/42.5 is the largest i would go with at our track
53-57 is all you need w/ 72-73 spur if you do cut them
Your going to have to cut them - especially when the new carpet arrives.