Write a Review
Cooper
Cooper Discoverer STT Pro 33X12.50R20 119Q - 170230006
Cooper Discoverer STT Pro 33X12.50R20 119Q - 170230006
📧 Get Fitment Help
Verify parts fit & get product recommendations
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
Price Match Guarantee Learn More
Free Mount & Balance
Free Shipping
OUT OF STOCK 
📧 Get Fitment Help
Verify parts fit & get product recommendations
The Cooper Discoverer STT Pro in 33X12.5R20 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 33X12.5R20 means
Flotation sizes read in inches: 33X12.5R20 stands about 33 inches tall, measures about 12.5 inches wide, and mounts on a 20-inch wheel. At that nominal height it turns roughly 611 revolutions per mile. Overall diameter is the number to watch for clearance and speedometer accuracy when you size up.
The service description on this tire decodes to a load index of 119 — a maximum load of 2,998 lbs per tire. The speed symbol Q corresponds to a maximum sustained speed of 99 mph.
Specifications
| Size | 33X12.50R20 |
| Tire Type | All Season |
| Service Description | 119Q |
| Load Index | 119 |
| Speed Rating | Q |
| Load Range | 12 |
| Section Width (mm) | 12.5 |
| Aspect Ratio | 33 |
| Overall Diameter (in) | 32.76 |
| Tread Depth (/32") | 21 |
Frequently asked questions
What does 119Q mean on the Cooper Discoverer STT Pro?
119Q breaks down as load index 119 — rated for 2,998 lbs per tire — with a Q speed rating, good for a maximum sustained 99 mph.
What kind of tire is the Cooper Discoverer STT Pro?
The Cooper Discoverer STT Pro in 33X12.5R20 is a all season tire.
Will 33X12.5R20 tires fit my vehicle?
Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 33X12.5R20, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
Keep shopping
Browse Cooper tires, see every Cooper Discoverer STT Pro size, or view all tires at ThreePiece.us.
- BRAND:
- Cooper
- Model:
- Discoverer STT Pro
- Size:
- 33X12.50R20
- Aspect Ratio:
- 33
- Load Index:
- 119
- Load Range:
- 12
- Section Width:
- 12.5
- Service Description:
- 119Q
- Speed Index:
- Q
- Tire Rim Diameter:
- 32.76
- Tire Type:
- All Season
- Tread Depth:
- 21
PRODUCT REVIEWS (0)
Overall Rankings
Have you tried this product?
WRITE A REVIEWNo reviews for this product yet. Be the first to write a review!
Write a Review