I understand to mount REALLY big tires on your syncro you
need to upgrade rear trailing arms to 16" type. Where do I
get some? How much are they? Anyone have part numbers?

Also, assuming one makes this upgrade and goes to syncro.org
springs or the fastforward lift kit, how big of a 15" tire
can you get back there?

It seems like 30x9.50/15 is as big as you can go without
doing all of the above (assuming you don't care about
carrying the spare in the stock location) is this true?

Thanks,
Chris