Chris
Shelter Bay, Wa
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boatpuller wrote:Wills250psd wrote:ExRocketScientist wrote:Not sure what tires you currently have, but I suspect they have a maximum inflation pressure of 80 psi. This G rated Hankook will require about 110 PSI. Make sure your rims are rated for the higher pressure.
And please capitalize some of the letters in your posts (like the first letter of the first word in a sentence) -- it is difficult to read with everything all lowercase. This isnt school if you dont like the way its written dont read it.
well said wills 250...there's a self appointed grammer monitor on every forum.he was polite however.
the bridgestone seems like a solid choice.i should have posted that i have a bighorn 3055 with 6 k axles.now,my only concern is diameter.i can't find the diameter of the 235/80/16 unicorns that it came with.the bridgestone duravis 250 is pushing 32in.any concern of distance between tires?
What is the center to center axle measurement? 235's normally require at least 33". There is also the 245/75R16 that is shorter and only slightly wider. Many use this size if axles are to close for the 235's. Both are rated to 3042 lbs at 80 lbs inflation. You will be fine until someone shows up and start railing about your placard and that you should not use a tire rated less than the OEM tire that might have been rated at 3420. Then they will tell you to use that type tire at 115 percent of your requirement, and around and around again we go.
FWIW you are on a good track with the R250's. I ran RIBs for 6.5 years and 40K+ miles and sold them for 200 bucks on CL. I installed R250's this time because they were cheaper, but just as good.
Chris
My Rig
2001.5 2500 STD CAB AUTO SLT 4x4, CTD 4:10's, Bomb'd to Tow
2005 Cardinal 29WBLX.
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mapguy
Puget Sound
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boatpuller wrote:now,my only concern is diameter.i can't find the diameter of the 235/80/16 unicorns that it came with.the bridgestone duravis 250 is pushing 32in.any concern of distance between tires?
The ST235/80R16 LRE tire is about 30.5 inches in diameter. It does vary a small amount by manufacturer.
LT235/85R16 LRE is about 31.7 in diameter (minimum 6.0" wheel required)
LT245/75R16 LRE is about 30.7 in diameter (minimum 6.5" wheel required)
You need 1" clearance between the tires and about 3" of bump clearance for axle articulation/travel at full loaded weight.
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Chris
Shelter Bay, Wa
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SH wrote:FastEagle wrote:SH wrote:mapguy wrote:That is a decent tire. Capacity is 3330. Not enough capacity for 7K axles though. Considered this tire for my 6K axles but ended up using Bridgestone M895.
Help me out here...what is the issue with using this tire on a 7K axle if the axle weight of the coach is below 13K? Not being a smart a@@ I sincerely would like to know! Our rig fully loaded, ready to camp has only 10,500 lbs on the trailer axles. It has 7K axles and a GVWR of 15K but it will never see that weight.
Thanks!
Minimum safety standards are written into the regulations to protect the playing field - so to speak. Minimum tire requirements by DOT regulation - for RV trailer axles - must equal the vehicle’s certified GAWR.
FastEagle
I don't doubt your expertise but something just doesn't "add up". Manufacturers do not sell coaches with tires rated to the GAWR! My rig comes stock with ST235/80R16-E rated tires and 7K axles as do many. A load range E is rated for 3420lbs...less than the 7K axle rating. I changed to Goodyear 614's load range G just for my own piece of mind.
I am so confused! 
What is the GAWR on the placard. Forget the axles, they can derate them on the placard. If the Placard list 7k GAWR then they owe you tires that can meet that requirement.
Keystone uses lots of 7K axles with 3420 tires, however the placard list GAWR at 6750 pounds.
Chris
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FastEagle
Taylors, SC
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Joined: 03/05/2007
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SH wrote:mapguy wrote:That is a decent tire. Capacity is 3330. Not enough capacity for 7K axles though. Considered this tire for my 6K axles but ended up using Bridgestone M895.
Help me out here...what is the issue with using this tire on a 7K axle if the axle weight of the coach is below 13K? Not being a smart a@@ I sincerely would like to know! Our rig fully loaded, ready to camp has only 10,500 lbs on the trailer axles. It has 7K axles and a GVWR of 15K but it will never see that weight.
Thanks!
Minimum safety standards are written into the regulations to protect the playing field - so to speak. Minimum tire requirements by DOT regulation - for RV trailer axles - must equal the vehicle’s certified GAWR.
FastEagle
Dickinson, ND
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gitane59
Ontario, Can
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Joined: 02/21/2004
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boatpuller wrote:Wills250psd wrote:ExRocketScientist wrote:Not sure what tires you currently have, but I suspect they have a maximum inflation pressure of 80 psi. This G rated Hankook will require about 110 PSI. Make sure your rims are rated for the higher pressure.
And please capitalize some of the letters in your posts (like the first letter of the first word in a sentence) -- it is difficult to read with everything all lowercase. This isnt school if you dont like the way its written dont read it.
well said wills 250...there's a self appointed grammer monitor on every forum.he was polite however.
the bridgestone seems like a solid choice.i should have posted that i have a bighorn 3055 with 6 k axles.now,my only concern is diameter.i can't find the diameter of the 235/80/16 unicorns that it came with.the bridgestone duravis 250 is pushing 32in.any concern of distance between tires?
I don't understand why you don't seem to see the importance and intent of the counsel you have received.
If you can't or won't find the shift key to capitalize you sentences then please double space every sentence so your thoughts can be read and taken seriously.
I hope you realize and care about the way you come across when you won't capitalizing your sentences.
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SH
Lynden, WA
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Joined: 09/27/2006
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FastEagle wrote:SH wrote:mapguy wrote:That is a decent tire. Capacity is 3330. Not enough capacity for 7K axles though. Considered this tire for my 6K axles but ended up using Bridgestone M895.
Help me out here...what is the issue with using this tire on a 7K axle if the axle weight of the coach is below 13K? Not being a smart a@@ I sincerely would like to know! Our rig fully loaded, ready to camp has only 10,500 lbs on the trailer axles. It has 7K axles and a GVWR of 15K but it will never see that weight.
Thanks!
Minimum safety standards are written into the regulations to protect the playing field - so to speak. Minimum tire requirements by DOT regulation - for RV trailer axles - must equal the vehicle’s certified GAWR.
FastEagle
I don't doubt your expertise but something just doesn't "add up". Manufacturers do not sell coaches with tires rated to the GAWR! My rig comes stock with ST235/80R16-E rated tires and 7K axles as do many. A load range E is rated for 3420lbs...less than the 7K axle rating. I changed to Goodyear 614's load range G just for my own piece of mind.
I am so confused!
2011 Heartland Big Country 3450TS 
2007.5 Chev LMM Duramax/Allison
2010 FLHTC Electra Glide Classic Red Hot Sunglo
Heartland Owners Club - Washington Chapter Leaders
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boatpuller
longview,wa
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RVUSA wrote:gitane59 wrote:If you can't or won't find the shift key to capitalize you sentences then please double space every sentence so your thoughts can be read and taken seriously.
If you're going to criticize others about grammar, at least spell your own words correctly. 
lol...or should i say LOL !!..
either way,thanks to those who helped me..and,to those who choose to judge me...mow your own back yard.
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FastEagle
Taylors, SC
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SH wrote:
I don't doubt your expertise but something just doesn't "add up". Manufacturers do not sell coaches with tires rated to the GAWR! My rig comes stock with ST235/80R16-E rated tires and 7K axles as do many. A load range E is rated for 3420lbs...less than the 7K axle rating. I changed to Goodyear 614's load range G just for my own piece of mind.
I am so confused!
ST235/80R16E tires can be rated as high as 3520# making any over 3500# legal on 7000# axles. A check of the sidewall may be needed to insure your actual load capacity.
FE
Edit: p.s. I think some of Heartland's fivers come with OE TowMax tires. Here are their specs.
TowMax specs
* This post was
edited 04/10/12 10:31pm by FastEagle *
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RVUSA
Orlando, FL, USA
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Joined: 01/04/2005
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gitane59 wrote:If you can't or won't find the shift key to capitalize you sentences then please double space every sentence so your thoughts can be read and taken seriously.
If you're going to criticize others about grammar, at least spell your own words correctly.
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gitane59
Ontario, Can
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Joined: 02/21/2004
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RVUSA wrote:gitane59 wrote:If you can't or won't find the shift key to capitalize you sentences then please double space every sentence so your thoughts can be read and taken seriously.
If you're going to criticize others about grammar, at least spell your own words correctly.
Oops Good catch my friend  As they say "touche".
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