<font color="blue"> Also, what PSI is appropriate? The tires are R4s... </font>
First, welcome to TBN, Carlton. /forums/images/graemlins/cool.gif
Second, the proper inflation pressure, for all three types (R1, R4, turfs) of tires, is in the Opertor's Manual. The front tires have a pretty large range, I just checked mine this past weekend and can't remember what I read! /forums/images/graemlins/tongue.gif I do remember setting my front tires to 25 psi, since I do more FEL work than most anything else.
I think the range for R4s was from 8 psi to 32 psi for the front tires. The max psi for the rears was 20 psi.