I would not try to haul aroud a spare for these reasons: I have weighed my rig and am not overloaded. I keep the right air pressure in all tires. I keep the sun off the tires and keep them clean. I do not drive over 65 (most of the time). If I did carry a spare I think that by the time I needed one (Present tires should be replaced) the spare tire would be as old and in worse shape than those on the road. The flexing of the sidewalls is waht will help keeep a tire in good condition. If I puncture a tire I could not change it myself and so I have just opted to have and use roadside assistance bring me a tire of brand and size I neeed.
Mike, Amy & Muffin, Full Timers
RVSA Certified Master Technician
iRV2.com -Gulf Stream Owners Forum Leader
2000 Scenic Cruiser
99 Chevy Silverado 4 X 4 Toad
2006 Saturn Vue AWD Toad
NASCAR #3 & #8