Choice between two tires that had identical sizes and one light weight & one was stiff side wall and one was a W tire with a softer compound than the other that was lite weight with a firm compound. Application is a 3175 lb door car.
18235 31.5/12.5-15 W* C 13.5" 31.7" 99.5" 12-14" 14" 17.0" D05
18237 13.5/31.5-15 L*** C 13.5" 31.7" 99.5" 12-14" 14" 17.2" C07
W has stiff sidewall softer compound
L is lite weight firm compound
OR
18239 31.5/13.5R-15 Radial C 13.5" 31.8" 99.7" 14-15" 14" 16.3" C06
18235 31.5/12.5-15 W* C 13.5" 31.7" 99.5" 12-14" 14" 17.0" D05
18237 13.5/31.5-15 L*** C 13.5" 31.7" 99.5" 12-14" 14" 17.2" C07
W has stiff sidewall softer compound
L is lite weight firm compound
OR
18239 31.5/13.5R-15 Radial C 13.5" 31.8" 99.7" 14-15" 14" 16.3" C06
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