Thread: L. R
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Old 10-19-2019, 02:51 PM   #4
Carl n Susan
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Join Date: Oct 2005
Location: Carmichael - CA
Posts: 4,153
M.O.C. #4831
I sure don't see a R speed rating for the two S637 ST tires (80 v. 85 aspect ratio). Both are "L's according to Sailun

https://www.sailuntire.ca/PLT/S637st.html
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Carl (n Susan) Youngren
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2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB

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