TerraGrips Tire Chains (20x8-8) [ST90001]

What It Is

The TerraGrips ST90001 tire chains add traction to 20x8-8 lawn tractor tires on snow, mud, or wet grass. Designed for push-behind snow clearing, hilly terrain, or slippery conditions where standard turf tires lose grip.

Fitment & Compatibility

• Tire size: Fits 20x8-8 tires only. Verify your tire’s sidewall markings—common on zero-turn mowers, garden tractors, and riding mowers from brands like John Deere, Husqvarna, Cub Cadet, and Craftsman.
• Deck clearance: Measure between tire and mower deck (or frame) when tires are turned fully left/right. Chains add ~0.5–1 inch of width. If clearance is less than 1.5 inches, they may rub.
• OEM vs aftermarket: Universal fit for 20x8-8 tires—no brand-specific mounting. Check your tire’s width (8 inches) and rim diameter (8 inches) match exactly.
• Not for: 20x10-8, 20x7-8, or 18x8.5-8 tires. Also avoid on zero-turns with tight fender clearance.

Key Things to Know

• Installation difficulty: Moderate. Requires jacking the mower, adjusting tension, and re-tightening after first 10 minutes of use. Plan 30–45 minutes.
• Quality: Heavy-duty welded steel with zinc coating resists rust. Users report 3–5 seasons of regular use on snow.
• Common gotcha: Chains can loosen on low-profile turf tires. Use included tensioners and check after first run. Also, may leave small marks on pavement.
• Noise: Noticeable on hard surfaces—fine for snow, but annoying on dry pavement for long drives.

Should You Buy It

Buy if you need reliable traction on snow or soft ground with a 20x8-8 lawn tractor, especially on hills or wet grass. Skip if your mower has tight deck clearance (under 1.5 inches) or you only mow flat, dry lawns—chains add noise and minor wear for no benefit.