New here with a couple quick questions. I just ordered a 21' Defender Max XT HD10. Ordering the S3 HD springs and wanting to put either the 30" Apache tire or the 30" STI X Comp tires on the stock rims. 1. Is that an option on the stock rims? and 2. Would I just need a 1" wheel spacer for the rear? Anyone have experience with the X Comp tires? Thanks for any input.