OK...now to put a "spin " on this.....

Would it be a good idea to change my rear rim from 17" to 18" ? It would give me a better selection of tyres, but would it have any adverse effects, other than my wallet? (approx �200)

I know that better tyres MAY help me in these early stages of offroad rally....plus better bike control (i know!!!)

__________________
2008 XTR Mods : DNA Stage 3 Airbox, PC111, Carbon Cans Ovals, Steve Ruth built XTR734cc Big Bore with - High Desert Dyno (HDD)/ Cuervo Racing Gas Flowed / Ported Head fitted with +1mm Valves & uprated Springs, HDD 5050 Camshaft, HDD +3mm Throttle Body, CP 105.5mm 11:1 Piston, Custom Mapping, Piasini ECU, Renthal 613-01, Barkbusters VPS, Pivot Pegz, Touratech Bashplate, Foam Grips, Kev's O2 Sensor Mod, Kev's Extra Coolant Cooler, Wilbers Progressive Fork Springs and Rear Shock