I checked the air pressure in the spare when we did the PDI last month and it was 105 pounds, mounted on a white spoke steel wheel. I couldn't swear to the fact that it was a Sailun so I checked it today. It is a S637 , same as the others.
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Mark & Karen
2021 3121rl - slide toppers, cottage white, TST 507 TPMS, X-Factors, disc brakes
2021 F-350, 6.7L, SRW CC LB - B&W Companion, Bakflip cover
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