Test fitted TTII'S on the 64 Tempest. 17x8 4.5 bs front 255-40 tire 18 x 10 rear 6" bs 295-35 tire. Fronts a title too wide and touched bottom lip of fender turning. Rears actually fit but had 1/8th to 1/4" clearance max so did not touch sitting but would not be able to drive it. A 275 width tire on the 10" would probably pull the sidewalls in for enough clearance to actually drive it.
