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Open Roads Forum  >  Fifth-Wheels  > 245/75/R16 or 235/85/R16? Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Page of 3   Next cruz-in • View posts UAS Senior Member Joined: 02/15/2009 View Profile Good Sam RV Club Member Offline Posted: 02/07/12 06:13pm Link  |  Quote  |  Print  |  Notify Moderator Hi All, Soon I will be replacing the ST tires on my 5th wheel with LT tires. The ST tires are 235/80/R16 Load Range E and the Max weight of the 5th wheel is just under 10K pounds. My question is: "Is there any advantage to using a 245/75/R16 or 235/85/R16?" Thanks Chris • View posts Shelter Bay, Wa Senior Member Joined: 12/19/2000 View Profile Good Sam RV Club Member Offline Posted: 02/07/12 06:17pm Link  |  Quote  |  Print  |  Notify Moderator Either are good. If you need the shorter 245's because of axle space, then get them. Otherwise 235's are great. Chris My Rig 2001.5 2500 STD CAB AUTO SLT 4x4, CTD 4:10's, Bomb'd to Tow 2005 Cardinal 29WBLX. Ed9824v • View posts Agua Dulce, Calif. 70 mi S.E. of Los Angeles Full Member Joined: 11/11/2007 View Profile Good Sam RV Club Member Offline Posted: 02/07/12 06:17pm Link  |  Quote  |  Print  |  Notify Moderator cant really say but my trailer came with 245/75/R16 8 lug. Yokohama Geolander tires LT245x75x16 Ed So.Calif 1950 Ford F1 street rod 1968 Baha Bug with 2.2 ecotec motor 170 hp, kingcoil 2000 National Sea Breeze 5th wheel trailer 1998.5 Dodge 2500 4x4 Cummins,4.10 gears,turbo,trans,injectors,oil cooler,lockers,edge EZ, 35" BFG's, air dog lift pump etc. OldGreaser • View posts South Texas Senior Member Joined: 02/13/2010 View Profile Offline Posted: 02/07/12 06:24pm Link  |  Quote  |  Print  |  Notify Moderator Everyone seems to reference the LT235/85/R16's when they upgrade. In my case these tires will not fit due to the larger diameter versus tight axle spacing on my trailer. The LT245/75/R16's are very slightly smaller in diameter than the ST235/80/R16's that are presently installed. I have not evaluated possible issues with tire width. Apart from dimensions I can't help with possible pros & cons. In either case you will want to be certain that the load rating meets or exceeds the axle rating on your rig. Apparently all 'E' tires do not have an identical load rating. (I'm acquiring a dangerous amount of knowledge....) donn0128 • View posts Pronounced Ore-gun Senior Member Joined: 04/21/2005 View Profile Offline Posted: 02/07/12 06:25pm Link  |  Quote  |  Print  |  Notify Moderator Pick the one that closest matches original diameter. Donn,Lorri,Max (rescued Lab) Saigon International Airport 1966/67 cruz-in • View posts UAS Senior Member Joined: 02/15/2009 View Profile Good Sam RV Club Member Offline Posted: 02/07/12 06:30pm Link  |  Quote  |  Print  |  Notify Moderator donn0128 wrote: Pick the one that closest matches original diameter. Humm....one is slightly bigger and one is sightly smaller... JIMNLIN • View posts out here Senior Member Joined: 09/14/2003 View Profile Posted: 02/07/12 07:05pm Link  |  Quote  |  Print  |  Notify Moderator If either size has no clearance issues I prefere the narrow 235/85 series tire as the 6.7" tread width closer matches the narrow 6.5" wide trailer wheels. Many 245/75 series tires can have a 7.5 inch wide tread. High load carrying tires work best with the wheel as close as possible to the tires tread width unlike a high performance vehicle with lightweight tire loads. Lots of 245/75 tires on std 6.5" trailer wheels so choose the size that works best under your wheel well. "good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers '03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach '97 Park Avanue 28' 5er 11200 gvwr two slides MC9 • View posts Cheboygan,MI Full Member Joined: 04/28/2009 View Profile Offline Posted: 02/07/12 09:14pm Link  |  Quote  |  Print  |  Notify Moderator I replaced the 235 80 16 chinabombs with 245 75 16 Transforce HT. I needed the diameter to be the same. Without a micrometer you won't be able to tell the difference in the width. SoCalDesertRider • View posts SanDiego, CA, USA Senior Member Joined: 12/14/2003 View Profile Posted: 02/08/12 02:16am Link  |  Quote  |  Print  |  Notify Moderator 245/75-16's and 235/85-16's are about 1" different in diameter and about 1/2" different in width. This means the 235/85's will be about 1" closer together between the axles and have about 1/2" tighter clearance to the tops of the wheel wells. The 245's will have about 1/4" tighter clearance with the springs, insides of the wheel wells and outer edges of the wheel wells. Load your trailer and measure your clearances to find out which tire would work best for you. 05E350 6.0PSD 97F350DRW 7.3PSD 4x4 4.10 11' flatbed 98Ranger 69Bronco ATC250R CR500 20' BigTex flatbed carhauler Callen Camper 92F350 CrewCab 4x4 351/C6 B&W TurnoverBall, Curt Magnum V HD Springs Bilsteins, 285/75-16E BFG AT on 16x8 Stocktons 4.56's & LockRite rear ExRocketScientist • View posts Laurel, MD Senior Member Joined: 11/11/2010 View Profile Posted: 02/08/12 05:32am Link  |  Quote  |  Print  |  Notify Moderator I put the LT245/75R16 BFG Commercial TA on mine. The diameter was what I desired. The approved rim width range differs between the two tires. For the 235 it is 6" to 7". For the 245 it is 6.5" to 8". If you have a 6.5" or 7" rim (I bought a 7" rim) you can use either one. There is one member here that put 245s on and had to switch to the 235s. The problem was they had outboard mounted shock absorbers. ERS Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  |  Oldest first Newest first  Page of 3   Next Open Roads Forum  >  Fifth-Wheels  > 245/75/R16 or 235/85/R16?

Search:   Advanced Search Search only in Fifth-Wheels

Jump to Forum Dear Marcus  - Good Sam Roadside Assistance  - Good Sam Club  - Good Sam Insurance  - Camping World Accessories  - Camping World RV Sales  - Good Sam Extended Service Plan  - Camping World Service and Inst... Recreational Vehicles  - Class A Motorhomes  - Class B - Camping Van Conversi...  - Class C Motorhomes  - Fifth-Wheels  - Folding Trailers  - Hybrid Travel Trailers  - Travel Trailers  - Truck Campers  - Toy Haulers Camping  - Tent Camping  - Family Camping  - Workamping Forum General Forums  - Beginning RVing  - Rallies, Shows and Gatherings  - General RVing Issues  - RV Lifestyle  - Full-time RVing  - Camp Cooks and Connoisseurs  - RVing with Disabilities and Ge...  - RV Pet Stop Technical Resources  - Do It Yourself Modifications a...  - Towing  - Tow Vehicles  - Dinghy Towing  - Technology Corner  - Forum Technical Support  - Tech Issues Locations  - RV Parks, National Parks, Stat...  - Roads and Routes  - Public Lands, Boondocking and ...  - RVing in Canada and Alaska  - RVing in Mexico and South Amer...  - Snowbirds Other Discussions  - Around the Campfire

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