This was a timely topic, first to pop up when I logged on. Last evening, just before dusk, we were traveling south on Interstate 5, almost to Sacramento, when the right tire on our two year old 17' SD started smoking. It was in shreds by the time we pullled over. Why does Casita put such cheap tires on their product? It is dangerous. It took my husband an hour with increasing darkness to change it with the giant trucks blowing past us. Very scary! Has anyone gotten new rims and used regular car tires?
Glad you got the Goodyear off before it hurt anything, and glad the tire change was safely done.
So far, no tire failures I'm aware of have caused accidents (though some damaged Casita), but perhaps the MOST dangerous aspect is changing a tire on a busy highway.
Actually, Goodyear tires can cost MUCH more than the heavy duty Kumhos that most of us are switching to so if Goodyears are "cheap" it is in construction, and not price.
As far as switching to different wheels and "regular" car tires, if you can find suitably rated 14" tires, you can retain your present wheels. There is no need to change them. They are not special for trailers at all. If you DO get new wheels, be sure that you get wheels with zero or almost zero offset. This means that the mounting surface of the wheels is located at the centerline of the wheel, so the load of the trailer is directly above the center of the wheel and tire. This minimizes stresses on the bearings and the axle.
As far as "regular" tires, again, the Kumhos we've switched to are NOT trailer tires. They are heavy duty (Load Range D) bus and truck tires that are ALSO rated to use for trailers. In the US Kumho sells them for trailer use, but around the rest of the World, they are used on delivery trucks and busses, and are available in a wide range of sizes. www.tirerack.com only carries a very few of the sizes the Model 857 tire is manufactured in.
Just be sure whatever you put on Casita is at least rated for as much as the Marathons (1850 pounds per tire), and the more margin above that, the better. Again, for comparison, the Kumhos (about $75 apiece) are rated to 2240 pounds per tire if memory serves.
5 bolts on a 4.5" bolt circle, Zero Offset (regardless of wheel diameter)
Stock size is 14"X6", but 15"X6" will also fit.
Discount Tire Stores, Inc. sells similar white spoke wheels for about $35 in 14" and 15" size.
Edited by Bobinyelm, 16 June 2007 - 11:08 AM.