Howdy All About to change my stock Bridgestone rear tire. I am a bit confused about the tire sizing. The Bridgestone reads 140/80-18 Am I right in thinking the 140 is width? The 80 is height? And the 18 rim size. I am looking to replace with Maxxis IT's front and rear (should I put a Dunlop on the front???). What size should I go for on my 2007 X?? As ever I am much obliged for all your help. Cheers.