I have a 631 Bobcat, the tires are almost down to the cord they're 10x16.5 , there is only about 1 1/2" of clearance between the tire and the lifting arm, will new tires have enough clearance, I have a manual that covers the 630, 631, & 632 it lists a 7x15 tire as standard I'd hate to have to buy all new wheels for it. Thanks Whitey