An RV parked more than it's driven ages its tires by the calendar, not the odometer — UV and ozone exposure break down sidewall rubber over months of sitting, and a loaded coach with water, propane, and gear on board needs tires rated for that weight, not the RV's empty curb weight. San Diego Tire Shop checks both before a trip.
Two things happen to an RV's tires that don't happen to a daily driver's: they sit still for long stretches between trips, and when they do move, the coach is carrying far more than its empty weight. Sitting in the sun bakes the sidewall rubber over time — cracking that starts small and isn't visible from the tread side — and it happens whether the RV is driven twice a year or twenty times.
The weight side gets missed even by owners who check their tires regularly. An RV loaded for a trip — full water and waste tanks, propane, gear in every bay — can run well past what the tires would need to handle empty, and the tire's load rating has to match the loaded weight, not the number that applied when it left the factory. San Diego Tire Shop checks both the sidewall condition and the load rating against how the RV actually gets packed, at 6215 University Ave B STE B, a shop backed by 39 five-star reviews and serving RV owners across its 13 service areas.
How much does sitting parked actually hurt an RV's tires?
More than most owners expect. A tire can have most of its tread left and still be unsafe if it's spent a few seasons parked in direct sun with the same side exposed the whole time — the cracking usually shows up first in the lower sidewall, near the rim, where it's easy to miss during a walk-around. An RV that only gets driven a couple of times a year needs its tires looked at on a schedule, not just when something looks obviously wrong.
Does the weight of what's packed inside actually change what tire I need?
Yes, and it's not a small difference. Full water and waste tanks add real weight on their own, and gear, tools, and supplies stack on top of that — none of it counted in the RV's listed curb weight. The tire's load rating needs to cover the RV as it's actually loaded for a trip, not as it sits empty on a dealer's lot.
How do I check my RV's tires for sun damage before a trip?
Look at the lower sidewall near the rim on both sides, not just the tread — that's where UV cracking usually shows up first on a parked RV. If it's been more than a season since the last check, having it looked at before a trip catches a problem before it turns into a blowout at highway speed.
Does the RV's weight when it's loaded for a trip matter for tire choice?
It matters more than the RV's empty curb weight, since that's not what the tires actually carry on the road. Water tanks, propane, and gear all add real weight, and the tire's load rating needs to match the RV as it's packed, not as it sits on a lot.
How often should RV tires get checked if I only take a couple of trips a year?
More often than the mileage would suggest, since these tires fail from age and sun exposure rather than tread wear. A once-a-season check before the RV comes out of storage catches sidewall cracking early, which matters more for an RV than for a vehicle driven daily.