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Thread: Sailun 235/80/16 or 235/85/16
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10-10-2018, 10:27 AM #1
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Sailun 235/80/16 or 235/85/16
My TT takes 235/80/16, I'm replaciing the WL tires the day I pick up the new rig with Sailun tires. Is there any benefit to paying the extra few bucks for the 235/85/16? I assume they will fit as they are only marginally taller.
Chad
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10-10-2018, 11:01 AM #2
You will get a little more load capacity out of the 235/85/16.
Since I was bored and sitting by my scientific calculator, I ran some numbers.
ST235/80R16, Diameter = 30.8". Circumference = 30.8" x π = 96.76". Number of revolutions per mile = 63,360"/mile ÷ 96.76" = 654.8 revolutions per mile.
ST234/85R16, Diameter = 31.7". Circumference = 31.7" x π = 99.59". Number of revolutions per mile = 63,360"/mile ÷ 99.59" = 636.2 revolutions per mile.
In 10,000 miles, you will have 6,548,000 revolutions on the 80 profile tires, and 6,362,000 revolutions on the 85 profile tires. That is a savings of 186,000 revolutions over 10,000 miles.
Useless data from your engineering friend. LOL.
Jim
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10-10-2018, 11:10 AM #3
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Hahaha. Thanks. I’m laughing out loud at work. Appreciate the info, the 85’s are only a few dollars more.
Chad.
Sent from my iPhone using Tapatalk2021 GMC 3500HD
2021 Montana High Country 385BR
2018 GMC 2500 HD (Traded in)
2019 GD312BHTS (written off by fallen tree RIP)
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10-10-2018, 11:33 AM #4
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10-10-2018, 01:24 PM #5
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10-10-2018, 01:26 PM #6
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10-25-2018, 06:15 PM #7
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Order my sailuns today from simple tire. They arrive tomorrow, jeez that’s fast. It probably doesn’t looked too great when I show up to get my new trailer and asked them to take off the westlakes before I go anywhere.
Sent from my iPhone using Tapatalk2021 GMC 3500HD
2021 Montana High Country 385BR
2018 GMC 2500 HD (Traded in)
2019 GD312BHTS (written off by fallen tree RIP)
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10-25-2018, 08:52 PM #8
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12-02-2018, 10:59 AM #9
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The Sailun S637 in the 235/85R16 size has a load rating of 4,409lbs vs 4,079lbs for the 235/80R16. The 85 series also has a slightly deeper tread. The higher load rating was important to me so I ordered the 85 series for my new Solitude. They are .9" taller than the 80 series but that shouldn't be a problem. I was curious if there was a difference in construction between the two models so I asked Sailun. Here is their response:
"Brian, there are no other differences between the 80 & 85 series. Construction is the same."Brian & Kellie
2020 Solitude 310GK-R, FBP, 1,460w solar, 540ah BBGC3, MORryde IS w/disc brakes
2020 F-350 Platinum SRW Powerstroke Tremor, 60g TF fuel tank, Hensley BD3-F air bag hitch
Previous setups:
2019 Solitude 373FB-R, 2019 F-350 Platinum DRW Powerstroke, Hensley BD5 air bag hitch
2016 Reflection 318RST, 2016 GMC 3500 Denali SRW Duramax, Hensley BD3 air bag hitch
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