Astro
Astro SR-666 540/65R38 R-1W Radial Agricultural Tire
Astro SR-666 540/65R38 R-1W Radial Agricultural Tire
SKU:SN01SS AST
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- Genuine brand-name parts
- Ships from US warehouse
- 30-day returns
Astro SR-666 in size 540/65R38. A 65-series R-1W radial tractor tire built for versatile field and road work. A wide footprint supports grassland and soft-soil use, and the wear-resistant compound, deeper tread and rim guard add durability.
- R-1W radial with deeper tread
- Wide 65-series footprint
- Wear-resistant tread compound
- Prominent rim guard
Specifications
| Brand | Astro |
|---|---|
| Model | SR-666 |
| Tire size | 540/65R38 |
| Construction | Radial |
| Tire type | R-1W Radial Agricultural |
| Category | Agricultural |
| Tube type | Tubeless |
| Approx. overall diameter | 65.6 in |
| Approx. section width | 21.3 in |
| Approx. weight | 345 lb |
| DOT date (year made) | 2025 |
| Manufacturer part number | SN01SS AST |
| Sold as | Single tire (each) |
Good to know
- Priced per tire — add 2 for a pair or 4 for a full set.
- Match the size printed on your current tire's sidewall (540/65R38) and the ply / load rating your machine calls for.
- Free shipping to the lower 48 states by truck freight (curbside delivery, typically 5–10 business days) — someone needs to be there to receive it.
- Mounting and balancing are not included. Tires that have been mounted or driven on can't be returned.
Shipping & delivery
Shipping & delivery
Orders ship from the distributor warehouse closest to you, normally within 1–3 business days of purchase. Standard ground delivery takes 3–7 business days in the continental US; expedited options are shown at checkout. Oversized items (bumpers, running boards, large tonneau covers, some marine equipment) ship LTL freight — we contact you to schedule delivery and a signature is required.
Returns & warranty
Returns & warranty
Unused, uninstalled parts in original packaging can be returned within 30 days of delivery. A restocking fee of up to 20% may apply depending on the product and supplier, and return shipping is the buyer’s responsibility unless the item arrived defective, damaged or incorrect. Every product carries the full manufacturer warranty. Contact us with your order number to start a return.
Fitment & part numbers
Fitment & part numbers
Verify fitment with the manufacturer part number shown above and your vehicle’s year, make, model and trim. If the listing says “Fits select…”, confirm your exact application before ordering. Not sure? Send us your VIN and the part number and we’ll check it for you.
