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05-02-2011, 02:17 PM
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#1
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Junior Member
Join Date: May 2011
Posts: 6
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Why bigger tires?
I bought a 2000 Sunnybrook and was told the previous owner increased the tire size from 15" -16" Why would he have done this and is there any benefit from doing so? What's odd, is that the frame is way off the ground. I have to put a foot of block in the rear to use the stabilizers, and their are now 4 door steps.
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05-02-2011, 02:33 PM
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#2
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Senior Member
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
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First, welcome to iRV2. Glad to have you with us.
Because of multiple blowouts and tread separations (quite expensive to repair!!), owners upgrade from the 15" ST-rated tires that come on many towables to a quality 16" LT-rated tire such as the all-steel construction Michelin XPS Rib. This has a number of advantages:
1. Increased load capacity - many OEM 15" tires are running at 90% to 95% of their rated load. The 16" LT tires are usually load range E and have significantly higher load ratings.
2. Availability of higher quality tires - the XPS Rib, for instance, is not available as a 15" tire.
If it were me, I would NOT consider going back to a 15" tire just to lose 1 entry step. That would be trading a minor inconvenience for major potential problems.
Rusty
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05-05-2011, 07:36 AM
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#3
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Senior Member
Join Date: Aug 2004
Location: Wherever we are
Posts: 4,288
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You are extremely lucky in that the previous owner solved a problem for you--keep the tires you have (assuming good condition). Using the blocks under the stabilizers will keep the trailer more steady when set up--the less the stabilizer is extended, the less wobble you will feel when inside.
Joe
__________________
'16 40QBH Phaeton
'21 Sahara HA toad
'15 38RSSA Mobile Suites--traded
'05 36TK3 Mobile Suites--retired but not forgotten
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05-06-2011, 07:43 PM
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#4
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,957
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I would like to add to the previous correct replies. The switch to 16" tires was probably because the previous owner did not know about 15" tires made in load range G and H https://www.tiresavings.com/tireShop...+Tires&season= , and matching rims for same.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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05-06-2011, 07:50 PM
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#5
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Senior Member
Join Date: Aug 2004
Location: Wherever we are
Posts: 4,288
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The tires at that link appear to be bias-ply?
Joe
__________________
'16 40QBH Phaeton
'21 Sahara HA toad
'15 38RSSA Mobile Suites--traded
'05 36TK3 Mobile Suites--retired but not forgotten
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05-06-2011, 08:28 PM
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#6
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Senior Member
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
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Quote:
Originally Posted by wingnut60
The tires at that link appear to be bias-ply?
Joe
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Yeah, looks like it. The following is from the Sigma tires website:
Quote:
Our Exclusive Sailun brand of Radial Truck Tires feature the Advanced Engineering, Superior On and Off Road Performance and Rugged Long Lasting Durability that today’s drivers demand, and our Power King Bias Truck Tires deliver the Exceptional Value and Reliability that are synonymous with the Power King name.
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Rusty
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