Tire Ratings.........

[CumminsPuller]

Do they make Load Range F & G tires for 16" and 17" wheels?



Jason

 

[Eric_77]

Yesdo a search under my name for the exact tire it is from Goodyear it is a G### they are about $250 a tire, available through commercial Goodyear tire dealers NTB, Discount Tire do not carry them.

 

[CumminsPuller]

I found your recomendation for the G614 by Goodyear. Is this the one your were talking about?



Jason

 

[Eric_77]

yep that's it they are heavy and finding a 16" rim with a rating over 3040# is not real easy.

 

[CumminsPuller]

They would be for my trailer. I know my trailer tires are bigger than my truck tires. Do they make 17" wheels, or does it go from 16" to 17. 5"? I just saw a guy over at the dieselstop.com that paid $173 a piece for his. Damn good compared to roughly $250.



Jason

 

[John Berger]

Michelin

I just bought 5 new Michelin 235/85R16 XPS 10 ply tires from etires.com.



$193 bucks a piece. Load rate E with a 6084# capacity per tire.



Correction: It looks like etires rate this tire by axle, instead of individual tire.

 

[kbarlow]

http://www.goodyear.com/rv/products/product_g614rst.html



I have these on a pair of 7000# Dexter never lubes. When I was ordering them they were only available with painted steel rims, but I didn't search very hard. I only have about 7000 miles on them and they appear to be holding up OK. I should be able to get the brand of the rims from the dealer if you want it.



On Edit: These tires are mounted on a 12500# 5er. Supporting 10000# rolling down the road. The temperature of the tires, rims and hubs were 110F at a speed of 60MPH. Outside air temp 87F, wind 30MPH about 30 degrees off the nose. They are a very stiff tire.



Cheers Ken

 

[JRG]

I too have a tire rating question.



1)... How much buffer is there in the sidewall rating/pressures?



2)... Are the any signs to look for if a tire is going to fail due to over loaded?



3)... Does it matter how often/long/speed the tire is overloaded?



I am tring to find out what to expect givin my situation.



JRG

 

[RustyJC]

Originally posted by JRG

1)... How much buffer is there in the sidewall rating/pressures?

It all depends on the tire. Some brands are suffering tread separations below their rated load. Other brands/designs work fine under the same loads.

2)... Are the any signs to look for if a tire is going to fail due to (being) overloaded?

Not always. If there are signs, they will typically be bulges (delamination) in the sidewalls or cracking around the tread/sidewall junction. You may or may not see these signs in time if the delamination takes place quickly. I had a Goodyear Marathon fail on a previous 5th wheel within 20 miles of leaving the campground where I had checked the tires visually and for correct air pressure. It looked fine, but did $2,500 in damage to the 5th wheel with a tread separation.

3)... Does it matter how often/long/speed the tire is overloaded?

Yes. The more often it's overloaded, the longer it's overloaded, the higher the speed at which it's driven and the higher the ambient temperature, the more likely a failure will occur. If the tire is underinflated for the load it's carrying, the chances of failure increase significantly.



Rusty

 

[dcamilleri]

If you are running 16 inch tires you might consider increasing size as a way of gaining load capacity. IE a 235/85R16 E is rated at 3042 lbs at 80 psi. A 265/75R 16 E is rated at about 3400 lbs at 80 psi and is about the same height and only slightly wider. These tires can be bought relatively cheap, around 100. 00 each.

 

[JRG]

I have 325/60/18 D 119s. Rated at 3000# @ 50psi. Ran them at 53psi and about 3800# for 2 hrs, 75-78* outside. Tire felt only slightly warm.



I would like to bump up the psi to say, 55-60psi to help out. Most all the other D range tires are rated at 65psi, not sure what the deal is with these tires.



I wonder if the ratings are low because the tire is speed rated. SO, if one was to keep the speed down, would there be a little more buffer in the #/psi capacity?



JRG

 

[dcamilleri]

JRG



I believe strongly in doing exactly what you are doing-feel the tire, heat is its biggest enemy. I have on occassion over inflated up to 10psi over max recommended inflation pressure to compensate for being over weight. Keep in mind also that many times the wheel is actually the weak link. I have failed 4 chrome spokes wheels with cracks about 1 inch from the bead while running 35x12. 5x16. 5. I have since upgraded to american eagle wheels in 9. 75x16. 5, they are rated at 3700 lbs each.

 

[jimnance]

Originally posted by dcamilleri

JRG



I believe strongly in doing exactly what you are doing-feel the tire, heat is its biggest enemy. I have on occassion over inflated up to 10psi over max recommended inflation pressure to compensate for being over weight. Keep in mind also that many times the wheel is actually the weak link. I have failed 4 chrome spokes wheels with cracks about 1 inch from the bead while running 35x12. 5x16. 5. I have since upgraded to american eagle wheels in 9. 75x16. 5, they are rated at 3700 lbs each.

I went with 19. 5" New Vision rims rated at 4500 lbs each. The commercial F rated tires are 3550 each. Keeps me safely within my tire weight limits.

 

[clem]

The Good Year 235/85x16 load range "G" G614 is a steel side wall tire, Side wall pressure at 110 lbs replaces the G159 tire that came apart. Good Year stood behind there tires for me. My 1998 5th wh came with G159's started having problems. They pro rated the remaining tires to G614's they are rated at 70 MPH I think. I haven't had any problems with the G614's. I will tell you Good Year will stand behind there tires. If by chance one does come apart save the tread so they can pro rated the tire,and Good Year will take care of Damages, But you must go to a GOOD YEAR STORE one who sells only Good Year tires. If you need help call 1-800-787-0572 they will put in touch with the right store. Also G614's can be had for about $180. 00 around here. My wheels are Dexter and rated to hold 110lbs of air so they shouldn't split

 

[kbarlow]

Originally posted by clem

..... I haven't had any problems with the G614's... ...

Clem,



How many miles do you have on them and how long have you had them installed?



Cheers Ken

 

[clem]

Comming up on 2 years and about 20K we keep on the move. We spend about 8-9 months on the road a year. We run about 2200 rpm at 62 mph. They are a wide tire and seem to run very cool at 110 psi, my truck tires 215/85x16 E run a little warmer at 80psi. Now this is using my Calabrated hand.

 

[kbarlow]

Thanks Clem,



We plan on being on the road for the next 9 - 10 months putting about 11000 more miles on them.



Ken

 

[PatrickCampbell]

Originally posted by jimnance

I went with 19. 5" New Vision rims rated at 4500 lbs each. The commercial F rated tires are 3550 each. Keeps me safely within my tire weight limits.

what are new vision rims? how much were they? i got ricksons... . never knew i had more than 1 choice other than alcoa for like $500 per rim.

 

[PatrickCampbell]

By the way, tires are MEANT to be run at their MAX LOAD continuously.



In order for a tire to be rated at 3000# at 80 PSI, it means it can really hold more than that.

 

[RustyJC]

Maybe that's the intention, but real life doesn't always work out that way. There's a long history of RV-related tire failures with Goodyear Marathons & (to a lesser extent) Wrangler HT's, various Carlisle trailer tires, etc. , where these tires suffer tread separations below their rated loads and at proper inflation pressures.



I've suffered a $2500 tread separation on a previous 5th wheel, so I'll just pay the money for my Michelin XPS Ribs and enjoy the peace of mind. YMMV.



Rusty