12.00R20 tyres – 21 sizes ADVANCE & SAMSON
12.00R20 is a radial truck tyre size for 20 inch rims, typically fitted to heavy trucks and long-distance coaches. The Advance Tyre catalogue lists 21 12.00R20 sizes from ADVANCE & SAMSON, with tread patterns GL618A+, GL689A, GL669A, GL671A, GL682A and other patterns.

| Tread | Brand | Ply rating (PR) | Load index | Tread depth | Pressure | Max load |
|---|---|---|---|---|---|---|
| GL618A+ | ADVANCE | 20PR | 156/153 | 19.5 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL618A+ | ADVANCE | 22PR | — | 16.5 mm | — | — |
| GL618A+ | SAMSON | 20PR | 156/153 | 19.5 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL669A | ADVANCE | 20PR | 156/153 | 16 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL669A | SAMSON | 20PR | 156/153 | 16 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL671A | ADVANCE | 20PR | — | 16.5 mm | — | — |
| GL671A | SAMSON | 20PR | — | 16.5 mm | — | — |
| GL682A | ADVANCE | 22PR | 158 | 17 mm | 950 kPa (138 PSI) | 4,250 kg |
| GL682A | SAMSON | 22PR | — | 16.5 mm | — | — |
| GL688A | ADVANCE | 20PR | 156/153 | 18.5 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL689A | ADVANCE | 20PR | 156/153 | 18.5 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL689A | ADVANCE | 22PR | — | 16.5 mm | — | — |
| GL689A | SAMSON | 20PR | 156/153 | 18.5 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL697A+ | SAMSON | 20PR | 156/153 | 19.5 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL909A | ADVANCE | 22PR | 158/155 | 25.8 mm | 970 kPa (141 PSI) | 4,250 / 3,875 kg |
| GL909A | SAMSON | 22PR | — | 16.5 mm | — | — |
| GL912A+ | ADVANCE | 20PR | 156/153 | 25 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL912A+ | SAMSON | 20PR | 156/153 | 25 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL985A | ADVANCE | 22PR | — | 16.5 mm | — | — |
| GL986A | ADVANCE | 20PR | 156/153 | 26.5 mm | 900 kPa (131 PSI) | 4,000 / 3,650 kg |
| GL992A | SAMSON | 22PR | 158/155 | 16.5 mm | 970 kPa (141 PSI) | 4,250 / 3,875 kg |
How to read the tyre size 12.00R20
For 12.00R20: 12.00 is the nominal tyre width (inch), R means radial construction and 20 is the rim diameter (inch). See also how to read truck tyre markings.
Tread patterns of size 12.00R20




Sizes for the same 20 inch rim
- 11.00R20 tyres – 19 sizes
- 10.00R20 tyres – 10 sizes
Frequently asked questions about 12.00R20 tyres
- Does the 12.00R20 tyre come with a tube?
- It depends on the size: some are supplied as a tube-and-flap set (TTF), others as a bare tyre (without tube or flap). Each product page states how it is supplied.
- What are the pressure and maximum load of the 12.00R20 tyre?
- For the pneumatic sizes checked against the catalogue, the pressure at maximum load is 900–970 kPa (about 131–141 psi) and the maximum load per tyre is 4,000–4,250 kg single and 3,650–3,875 kg dual. See the table above; the actual pressure must follow the vehicle load, see truck tyre pressure.
- How do I order 12.00R20 tyres?
- The website takes quotation requests and does not sell online: choose a size, add it to the quotation and send it, and our sales team replies within 24 working hours.
Need a quotation for 12.00R20 tyres?
Send your sizes and quantities and our sales team replies with a project quotation within 24 working hours.