Astro
Astro Bus/Light Truck/Truck Tube (TR78A) 12R20 Inner Tube Tire (Commercial Truck)
Astro Bus/Light Truck/Truck Tube (TR78A) 12R20 Inner Tube Tire (Commercial Truck)
SKU:T120020:R TR78A KR AST
In stock
Couldn't load pickup availability
- Free shipping on $70+
- Ships from US warehouse
- 30-day returns
Astro Bus/Light Truck/Truck Tube (TR78A) 12R20 is an inner tube commercial truck tire.
Butyl inner tube for tube-type bus, light truck and truck tires. Built to hold pressure under heavy loads and long highway runs, with a truck-style valve stem sized for dual-wheel access.
Key features
- Butyl rubber for strong air retention
- TR78A bent metal valve for dual wheels
- Fits 20- and 22-inch tube-type truck sizes
- Sold in multi-packs
Specifications
| Brand | Astro |
|---|---|
| Model | Bus/Light Truck/Truck Tube (TR78A) |
| Tire size | 12R20 |
| Rim diameter | 20 in |
| Construction | Radial |
| Tire type | Inner Tube (TR78A Valve) |
| Category | Commercial truck tires |
| Severe snow rated (3PMSF) | No |
| Overall diameter (approx.) | 41.6 in |
| Section width (approx.) | 12.0 in |
| Revolutions per mile (approx.) | 485 |
| Weight (approx.) | 149 lb |
| Production year (DOT) | 2020 |
| Manufacturer part number | T120020:R TR78A KR AST |
| Sold as | Single tire (each) |
| Condition | New |
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 (12R20) and use the same or a higher load index and speed rating.
- 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. Alaska and Hawaii are quoted at checkout.
- Mounting and balancing are not included. Tires that have been mounted or driven on can't be returned.
Questions
Does 12R20 fit my vehicle?
It fits any vehicle whose tire placard (driver's door jamb) or current tire sidewall reads 12R20. Use the same size and the load and speed rating your placard calls for — or whatever your placard specifies. Not sure? Send us your vehicle's year, make, model and the size on your tires and we'll confirm.
How many tires do I need to order?
The price is per tire. Order 2 for a pair, 4 for a full set (6 for dual-rear trucks).
How does it ship and what does shipping cost?
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. Alaska and Hawaii are quoted at checkout.
Can I return a tire?
Yes — unmounted, undriven tires can be returned within 30 days of delivery. Tires that have been mounted or driven on can't be returned. Mounting and balancing are not included.
How old is the tire?
Production year (DOT date) 2020 — stock rotates, so the tire you receive is from current inventory.
Shipping & delivery
Shipping & delivery
Free standard shipping on orders of $70 or more to the lower 48 states and DC; $8 on smaller orders. Express is $15 at checkout; Alaska and Hawaii are charged by weight. Orders ship from the warehouse closest to you — the same business day, or the next business day if ordered late in the day, on a weekend or holiday. Standard delivery takes 3–5 business days. 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 return shipping is the buyer’s responsibility unless the item arrived defective, damaged or incorrect. Items marked Final sale can't be returned. If a part fails, contact us with your order number and we'll help with the manufacturer's warranty claim.
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.
