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What Does Class S Compatible Mean?  

Updated 09/29/2025 | Published 05/14/2025

Question:

On you tire chain, what the meaning of Not Class S Compatible?

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Expert Reply:

Hey Mitch! Class S tire chains are designed for use on vehicles with restricted wheel well clearance. I have attached a photo that shows the areas where clearance for Class S tire chains is needed. For the A dimension a minimum of 1.46" between the top of the tire tread and the wheel well is needed. For the B dimension, at least 0.59" between the tire's sidewall and the vehicle itself is required.

For S Class compatible tire chains that fit the 245/70-17 tires on a 2024 Ram 2500 you would want the Titan Chain Cable Tire Chain item # TC3010.

What size tires do you have?

Please note, the Titan Chain Alloy Snow Chains w/ Cams for Wide Base Tires item # TC3229SCAM you were looking at are not S Class compatible.

expert reply by:
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Jerred H
S Class Chart
S Class Chart
(click to enlarge)
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Jerred H.

9/29/2025

Hey Mitch, did you find the right tire chains for your Ram? I'm asking because your experience could help others with similar tire chain questions.

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