Goodyear G614 RST

[Justme44]

Can I run new Goodyear Unisteel G614 RST tires on my 6 lug steel rims at 85 psi? I have a 2000 3280rl. I want to use really good tires and the tires on the rig look very old.
Dennis

[rohrmann]

You probably could do that. If you have 6 lug wheels, you should have 6,000 lb axles, and if that is the case, you could easily use good LT truck tires, which will have 3042 lbs capacity at 80 psi, for a lot less money, and have just as reliable a tire as the G614. There are some all steel LT tires, that are 10 ply rated, that will do what you want.

[WeBeFulltime]

quote:Originally posted by rohrmann

You probably could do that. If you have 6 lug wheels, you should have 6,000 lb axles, and if that is the case, you could easily use good LT truck tires, which will have 3042 lbs capacity at 80 psi, for a lot less money, and have just as reliable a tire as the G614. There are some all steel LT tires, that are 10 ply rated, that will do what you want.

Agree! Overkill and a waste of a lot of money. 614s are great tires but your unit simply does not need them. I'd go with a QUALITY LT.

[mlh]

A G614 and a same size LT tire at the same pressure have the same weight carrying capacity. But it's your money if you wont the G tires buy em but you gain nothing but peice of mind.
Lynwood

[rames14]

I agree. As long as your tires are not the weak link, you should be good to go. I never recommend having your tires having less carrying capacity than your axles. Over on the Facebook site, someone is putting LT tires on a large coach. Giving up almost 2000 lbs of carrying capacity. Your case is different. Good luck.

[DQDick]

I'm a big proponent of 614's but as stated above your rig simple doesn't need them. Many on this forum use good LT tires for rigs like yours with no problems at all.

[rames14]

X2, Dick. This is our 2nd Montana with G614's. Love them. But, running at 85 psi, not really getting the money's worth.

[1retired06]

Good LT tire option are the Firestone TransForce products

[Drifty1]

If I was you I would try the Sailun S637 tires for the heck of it.. They cost less but you get the plys of the 614.. Just my thought..

[RKassl]

Love my G614's anything that gives me a little more edge on the highways is just fine with me, again, this is one of those personal decisions, nobody is wrong here.

[Justme44]

Thanks everyone for the fantastic response and informed insight.
Dennis

[mhs4771]

A thought here: If you run a 110 PSI tire at only 85 PSI, wouldn't that be like running a tire under inflated and subject to increased heat build up? I know many are running the G's at 100 to 105, but still a lot more than 85. Probably more of a question for Lonny.

[rohrmann]

I haven't been able to find a chart specifically for the Sailun's, but the Goodyear chart for the G614's would be similar. The weight capacity changes with the lower pressures, and as you increase the pressure, the capacity increases. At 80 psi, the weight capacity is the same as for a load range E tire, 3042 lbs, at 85 psi it's 3170 lbs, 90 psi 3300 lbs, 95 psi 3415 lbs, 100 psi 3550 lbs, 105 psi 3675 lbs, and at 110 psi it's 3750 lbs. These are the loads and pressures for the LT235/85R16 tire. So, for a 6,000 lbs axle, 80 psi would give the capacity to max out the axle rating, and for a 7,000 lb axle, you would want at least 100 psi.

[Dam Worker]

That is good advice Bob. I would hope that it is a tougher tire even at 80psi then the inferior brands but a tire manufacter rating is still what is designed to safely carry.

Tom Marty

[kozzy]

LT TIRES I thought didn't Handle the lateral forces imposed by a trailer and ST tires did. I'd love to use LT tires they same to be a more cost effective solution over the g614. But will they performed the same and are the as safe as ST tires? I need to replace my trailer king tires for sure

[twindman]

I have used LT tires on the Montana for about 8-9 years now. My axle weight has been around 10,000 to 11,000 lb for total axle weight between my 2 trailers. I have also turned some pretty tight corners often and have no problems.
Maybe if you push the weight close to the max for LT tires (3042??) it might be a problem but I don't know.
EDIT - just notice you are using a 2955 - my previous was a 2980 (heavier than yours). So my feeling is you are very safe with LTs. Oh, I use Michliens if that helps.

[kozzy]

well my GVRW is 16000 and change, pin weights is about 3000, so that leaves 13000 on my axles.
I have 7000# axles, looks like LT tires will not hold up if I switched to them

[rohrmann]

The Sailun's are now rated as ST tires, but the Goodyear G614's are rated LT, but that is only because of it's 75 MPH speed rating. They are strictly designed for trailer use, and have the weight capacity to handle the full 7,000 lb axles. You must use a tire that at least meets the weight rating of your axle, so an LT truck tire that has a load capacity of 3042 lbs will not work.

[CWSWine]

quote:Originally posted by mhs4771

A thought here: If you run a 110 PSI tire at only 85 PSI, wouldn't that be like running a tire under inflated and subject to increased heat build up? I know many are running the G's at 100 to 105, but still a lot more than 85. Probably more of a question for Lonny.

This is a quote from Goodyear website and the link is below.

"Be safe - if a tire has been run 20% underinflated, it must be dismounted and inspected by a trained professional. It should not be aired up without a fullinspection or without using a safety cage. Use a calibrated gauge. If your tire is rated for higher inflation pressures, a special gauge will be required designed for larger tires.

http://www.goodyearrvtires.com/tire-...n-loading.aspx

[fauch]

The LT tire does not reach it's capacity until 106 mph.