I am fairly new to offroading and hate to sound dumb here but if I put 32's on my x, do you have to have the same size spare? Ive been doing a lot of research and I read on here the biggest tire that will fit in the underneath wheel well is a 31 inch tire. So say I have 32's and keep a 31 under there as a spare, is that do-able??? can you have 32's on and one 31 inch tire to get to the nearest service station? any info would greatly help.