A Tire Solution For Extra Heavy PCs

I read on rare occasion that a few of you with the longest (and heaviest) PCs with 2 or 3 slide outs occasionally have a damaging tire blow-out.

While internet shopping for tires for our 2350, I stumbled on three "E" rated tires with an increased load rating.  The norm is 2680 pounds.  These are to 3195 pounds.  An extra 515 pounds per tire would be very good to have on an extra heavy motor home.  CLICK HERE to see a list of three such tires available through Tire America.  I assume those stronger tires will be rougher riding so I am not considering them for our 2350.  Our PC has plenty of margin on our regular 2680 pound "E" rated tires.

Interesting info. One of ours blew this summer. We have the 2552 with one slide. I blame it on the tires. Most others from around our build time were in the tire recall. We missed it but I suspect there are more tires out there that should have been included... Like ours.

I am not advising what other people should do, but if my rig's load required the full 80 psi in the tires, I would consider those stronger tires.

I'm interested in the higher rated tires. I have a 2910t and towing a trailer. I worry about the tires and safety. I will be checking this out. Thanks for the tip.
Rick

I would agree that a more heavy duty tire would be helpful for the longer and heavier PC’s but before I went to far I would want to know what the wheel rating might be?  Ford has some great engineers figuring load ranges, etc and I would wonder why they have chosen to not go with a heavier tire? Just MHO.  Thanks and a great holiday season to all.  Be safe!

On another forum, someone said the E350/E450 steel rims have stamped into the steel, a max of 80 PSI.

On Tire America's website, The Nexen Roadian CT8 HL tire with a 3195 pound rating for $134.91 has a max tire pressure of 83 psi, just 3 pounds over the rating of the E450 steel wheel.  I would think that is within the margin of safety.

Their other tire, General Grabber HD for $190.99 has a 90 psi max which is uncomfortable for me.

The third tire, Continental Vanco 4 Season for $226.99 has an 83 psi max.  Max psi was not available but I found the psi number from Tire Rack's website.  They sell the same tire for $237.53.

Tire Rack also sell Continental VanContact A/S for $240.69 with a 90 psi max.

There seems to be two basic groups of "Load 121" 3195 pound rated tires.  Some have a max psi of 83, others have a max of 90.  I suggest to limit yourself to ones with a max tire pressure of 83 PSI as not to exceed the steel wheel except by just 3 psi.  But I am surely no expert on this subject.  Think of me as "The Messenger" with an opinion.

The larger concern is the rating of brakes, axles and springs. Just putting on heavier load tires is not a fix for overloaded vehicles.

There's a reason for the various weight ratings.  Yes, there is a safety margin but you should avoid going into that margin because, by definition, your setup becomes less safe.