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10-14-2019, 11:29 AM
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#1
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Junior Member
Join Date: Oct 2019
Posts: 6
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Castle Rock tires
I just made a deal on a 2020 Sierra 38fkok. Does anyone know if the rims are rated for a G rated tire. Not sure on the Castle Rock tires that are on it now will cut the deal for me. Thinking about going to the Carlisle ST tire.
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10-14-2019, 11:43 AM
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#2
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 17,114
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We're likely not going to be able to answer that question for you.
With as often as the factory changes equipment, you never know what the next unit down the line might have on it.
Many wheels are stamped for the PSI rating on the inner wheel area.
What load range tires are on it now?
most wheels are good for one load range higher and it's usually the rubber stem that is the issue.
Install metal stems.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2017 Ford F-Series SCREW 4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped: '18=48 ☼ '19=58 ☼ '20=110 ☼ '21=116 ☼ '22=112 ☼ '23=72
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10-14-2019, 12:03 PM
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#3
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Junior Member
Join Date: Oct 2019
Posts: 6
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E-Rated tires now, which makes the tires just within specs of total weight after loaded at 15,500. And yes that's if you stay within that loaded rate.
Going over weight is a common practice of many, just saying
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10-14-2019, 12:20 PM
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#4
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Senior Member
Join Date: Feb 2019
Posts: 145
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As to the Castle Rocks, many opinions on here. Search Castle Rocks or China Bombs and I am sure you'll see why, several threads will come up.
Some have had no issues while others have had issues just sitting in the camp site.
Our '18 came with CR's and though I didn't have any issues I bit the bullet and swapped them out for Goodyear Endurance tires before our first long haul.
__________________
'18 Rockwood ROO 21SS
600# Fastway E2 WDH
'14 F-150 FX4 SuperCab
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10-14-2019, 01:06 PM
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#5
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Junior Member
Join Date: Oct 2019
Posts: 6
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I get the rig Friday, load over the weekend, Monday new hitch installed, Tuesday maybe new tires and Weds start our trek south for the winter which is a 1200 mile first trip. Now you know why I am asking about tires lol
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10-14-2019, 01:22 PM
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#6
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 17,114
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Quote:
Originally Posted by Mingus49
I get the rig Friday, load over the weekend, Monday new hitch installed, Tuesday maybe new tires and Weds start our trek south for the winter which is a 1200 mile first trip. Now you know why I am asking about tires lol
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Best of luck to you.
I'd want a shakedown trip or two close by before I began a 1200 mile journey with an all new set-up... but that's just me I suppose.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2017 Ford F-Series SCREW 4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped: '18=48 ☼ '19=58 ☼ '20=110 ☼ '21=116 ☼ '22=112 ☼ '23=72
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10-14-2019, 04:38 PM
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#7
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Junior Member
Join Date: Oct 2019
Posts: 6
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The closest I can do for a shakedown will be the trip home of about a 100 miles. Will be doing a real good PDI and nothing will go unchecked. As you can tell, the tires have me a bit worried as they are rated for 15,400 lbs. including the pin weight so with the rig loaded I will be at max with these tires. Pretty sure next Tues. there will be new shoes going on this one!
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10-14-2019, 05:14 PM
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#8
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Junior Member
Join Date: Oct 2019
Posts: 6
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The Carlisle tire that I am looking into is a ST tire which is a trailer tire. The specs on it are rated for 4080 lbs. each tire, and also rated for 87 mph. Dealer will get back with me tomorrow and let me know what my trailer has as far as wheel ratings. If all goes well next Tuesday I will be putting new tires on I assume right now
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10-14-2019, 05:34 PM
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#9
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Senior Member
Join Date: Jul 2017
Posts: 3,662
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Quote:
Originally Posted by Mingus49
The Carlisle tire that I am looking into is a ST tire which is a trailer tire. The specs on it are rated for 4080 lbs. each tire, and also rated for 87 mph. Dealer will get back with me tomorrow and let me know what my trailer has as far as wheel ratings. If all goes well next Tuesday I will be putting new tires on I assume right now
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The psi won't matter as much as the weight the wheel is designed to carry . PSI stamps on the wheels is in direct correlational to the max weight the wheel can handle IE a rim stamped 65 psi can handle the weight load of a D rated tire 2150 lbs a load range E around 2830 . if you can go to a load
G you will an extra margin of safety but the wheel will be designed to handle 2830 unless the wheel is stamped at either a higher psi say 110 or a weight stamp of 4080 . it will be able to hanle the 110 psi just not the extra weight so a G rated tire will not increase your payload but only increase the margin of satety
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10-15-2019, 09:32 PM
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#10
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Junior Member
Join Date: Oct 2019
Posts: 6
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Update: Visited the dealer today and did some more checking on the tires. What I was told and what is turned out differently. I was told it was a E rated tire according to the brochure, but in fact the tire is rated as an F rated tire. Which gives me the cushion I feel I need. Be careful to not overload unit by weighing things, run less than 65 MPH even though they are rated for 77 mph. And keep the air pressure where it’s suppose to be and all should good good. Let’s just hope! I’m sticking with what’s on it and keeping a good eye on them also ordered a tire monitor so I can keep an eye on things that way also.
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