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View Full Version : Keystone Raptor triple axle - upsizing to 235/85-16


BlueLghtning
07-05-2017, 10:05 AM
My wife and I are getting closer to our full time RV life and I'm now shopping for new tires for my 2012 Keystone Raptor 4014LEV that grosses at 18k lbs. Has anyone ran into any issues upszing to the 235/85-16 on this triple axle trailer? The 235/80-16 is the stock size, but tempted to go with the 235/85-16 which are .9 inches larger than the 80 series in diameter or just under 1/2" larger on any side of the tire. I have plenty of clearance over the tires. I measured between the tires and I have 3" clearance between the front/middle axle tires and 4" between the middle/rear axle tires, so this should reduce each of those by an inch compared to the current tires.

My top choice of new tires is the the Sailun S637's. They seem to get good reviews, are G rated, and they leave me plenty of carrying capacity in reserve as to not stress them too much. I already verified my rims are rated at 110psi. However, I'm not sure about the spare rim if it's rated to that and forgot to check? Anyone know about the spare? This will be a full time rig being pulled by a Volvo 610 semi and I expect to be loaded near capacity. I know the Sailuns do come in the stock 235/80 size, but the 1/2" higher is appealing because of the current height of my hitch which I think has me a tad nose high. Is it worth it to size up or just stay stock?

My 2nd choice is the Goodyear Endurances, but that's still an E rated tire and they really seem too new to get long term feedback. Not to mention the stock sizes are only rated at 3420 at 80psi like the Maxxis M8008, so that doesn't leave as much room in reserve. The Sailuns cost about the same price or lower for over 4k lbs capacity rating at each tire.

The previous owner has a hodge podge of tires on the 5th wheel including, a couple of the original tow max tires that are showing their age, plus a couple gremax tires that don't look much better, one Maxxis M8008 and a unmounted Goodyear Marathon he threw in. I know the Maxxis is the only acceptable one out of all of those, but the previous owner never kept it covered. It could probably make a good spare if I stay with stock sizes. If I size up, I'm pretty sure I should do all 7 tires.

Thanks for your assistance.

BTW, here's my setup with my Volvo 610 HDT and 41'7" Raptor 4014LEV.
https://photos.smugmug.com/Cars/2000-Volvo-610/Volvo-610-Various-Pics/i-6FGnstW/0/a6c34f55/L/IMG_20170704_141753-L.jpg

You can see I actually had to mount the spare on this side because one of the stock towmax tires had the belts let loose and the tire was bulged out around the tread. That's why the owner gave me the GY Marathon, but that tire seems to be junk too from reviews.
https://photos.smugmug.com/Cars/2000-Volvo-610/Volvo-610-Various-Pics/i-H3XgBGV/0/e029063a/L/IMG_20170704_142118-L.jpg

My wife loves the HDT too
https://photos.smugmug.com/Cars/2000-Volvo-610/Volvo-610-Various-Pics/i-QxHXDsL/0/18898c45/L/2017-04-09%2018.47.55-L.jpg

https://photos.smugmug.com/Cars/2000-Volvo-610/Volvo-610-Various-Pics/i-3HNRGf9/0/dfa35961/L/2017-04-09%2018.47.40-L.jpg

Tbos
07-05-2017, 11:42 AM
Nice looking rig. Saw one similar this weekend in TN.


2016 Passport GT 2810BHS, 2016 F350 CC DRW

captcolour
07-05-2017, 03:23 PM
I upgraded to Sailun's right after purchasing my 5th wheel back in May. Great tire. Simpletire.com seems to have the best price at least when I looked. They are recommended for 6.5" width wheels and it says that right on the sidewall. I would recommend getting the correct wheel width while your at it.

Desert185
07-05-2017, 09:35 PM
You could go with these in LRF. Strangely, the 235/80's also indicate a 6.5" wide wheel.

https://www.carlislebrandtires.com/our-products/product-detail/radial-trail-hd

McG-Family
07-06-2017, 03:19 AM
Nice looking rig. Saw one similar this weekend in TN.


2016 Passport GT 2810BHS, 2016 F350 CC DRW


I saw something very similar also, rolled through KOA Nashville :cool:

BlueLghtning
07-06-2017, 05:23 AM
You could go with these in LRF. Strangely, the 235/80's also indicate a 6.5" wide wheel.

https://www.carlislebrandtires.com/our-products/product-detail/radial-trail-hd

I haven't researched those tires to know what people think and how they do on heavy toy haulers?

canesfan
07-06-2017, 06:15 AM
I haven't researched those tires to know what people think and how they do on heavy toy haulers?

Lot's of forum members have been buying the Carlisles recently. The HD is newer versions of the RH, which had very good reviews. I put some on mine earlier this year. Happy so far. Wmart was having VERY good prices on them, and DT and other places were said to be matching their price.

BTW, I called Carlisle about the 6.5" rim thing, they said they will go on 6" rims just fine also, the 6.5" is not a "requirement".

BlueLghtning
07-06-2017, 02:01 PM
Well, I decided to play it safe and stay with the 235/80-16 size. I did go with the Sailun S637's though for moving up to G rated and the extra carrying capacity. Since I have the one good Maxxis M8008, I'm going to mount that on my spare and keep it for now.