So I didn't know what size to go for my van either. Tire size: 235/60-18. The owner's manual recommends using 231905 and the size chart on Revain and Auto-Trac's website recommends 232405. I called Auto-Trac to report conflicting sizes and they confirmed they would use 232405 and the CS agent supported their size chart. I went ahead and ordered what the user manual recommended (231905) and when I opened the box the label on the chains (0231905) shows compatibility with 235/60R18 among other sizes. I didn't open them as I didn't need to wear them last weekend, but Auto-Trac needs to check their sizing chart for accuracy. I hope they still fit despite conflicting model numbers. UPDATE: 03/24/20. They worked great during last week's blizzard in Norkal. Fits perfectly (231905 for 235/60R18), a bit tight but easy to remove. He did a great job and I'm sure my family will be safe with them. Due to recent field use and ease of installation, I've increased my rating from 3 to 5 stars!
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