2004 Chevrolet Colorado — Regular Cab 2wd Z85 Base Model
The 2004 Chevrolet Colorado Regular Cab 2wd Z85 Base Model came from the factory equipped with 205/75R15 tires. If your vehicle has since been fitted with aftermarket or upsized wheels, your actual tire size may no longer match this factory spec — always confirm against your door placard before buying.
205/75R15
| Section width | 205 mm |
|---|---|
| Aspect ratio (sidewall height) | 75% (153.8 mm) |
| Rim diameter | 15" |
| Overall tire diameter | ~27.1" |
| Revolutions per mile | ~744 |
Compare prices at:
What this size means for your Chevrolet Colorado
On the 2004 Chevrolet Colorado Regular Cab 2wd Z85 Base Model, the factory 205/75R15 measures about 27.1″ in overall diameter with a 153.8 mm (6.1″) sidewall, and completes roughly 744 revolutions per mile. Its 75-series aspect ratio gives a tall sidewall of the kind used on trucks, SUVs, and older passenger cars, built for cushioning and load. In tire terms it is a passenger (P-metric / Euro-metric) size.
On a vehicle of this age, the Chevrolet Colorado may have been refitted with a slightly different replacement size somewhere in its life, so check the current sidewall — not just the factory spec — before buying.
Other 2004 Chevrolet Colorado trims
- Extended Cab 2wd Z71 Off-Road Package 265/75R15
- Extended Cab 2wd Z85 Base Model 205/75R15
- Extended Cab 2wd ZQ8 Sport Package 235/50R17
- Extended Cab 4wd Z71 Off-Road Package 265/75R15
- Extended Cab 4wd Z85 Base Model 235/75R15
- LS Crew Cab 2wd Z71 Off-Road Package 265/75R15
- LS Crew Cab 2wd Z85 Base Model 225/75R15
- LS Crew Cab 2wd ZQ8 Sport Package 235/50R17
- LS Crew Cab 4wd Z71 Off-Road Package 265/75R15
- LS Crew Cab 4wd Z85 Base Model 235/75R15
- LS Extended Cab 2wd Z71 Off-Road Package 265/75R15
- LS Extended Cab 2wd Z85 Base Model 225/75R15
- LS Extended Cab 2wd ZQ8 Sport Package 235/50R17
- LS Extended Cab 4wd Z71 Off-Road Package 265/75R15
- LS Extended Cab 4wd Z85 Base Model 235/75R15
- LS Regular Cab 2wd Z71 Off-Road Package 265/75R15
- LS Regular Cab 2wd Z85 Base Model 225/75R15
- LS Regular Cab 2wd ZQ8 Sport Package 235/50R17
- LS Regular Cab 4wd Z71 Off-Road Package 265/75R15
- LS Regular Cab 4wd Z85 Base Model 235/75R15
- Regular Cab 2wd Z71 Off-Road Package 265/75R15
- Regular Cab 2wd ZQ8 Sport Package 235/50R17
- Regular Cab 4wd Z71 Off-Road Package 265/75R15
- Regular Cab 4wd Z85 Base Model 235/75R15
Chevrolet Colorado tire sizes by year
- 2026 Chevrolet Colorado 255/65R17 / 265/60R18
- 2025 Chevrolet Colorado 255/65R17 / 265/60R18
- 2024 Chevrolet Colorado 255/65R17 / 265/60R18
- 2023 Chevrolet Colorado 255/65R17 / 265/60R18
- 2022 Chevrolet Colorado 255/65R17 / 265/60R18
- 2021 Chevrolet Colorado 255/65R17 / 265/60R18
- 2020 Chevrolet Colorado 265/70R16
- 2019 Chevrolet Colorado 265/70R16
- 2018 Chevrolet Colorado 265/70R16
- 2017 Chevrolet Colorado 265/70R16 / 255/65R17 / 265/60R18
How to read a tire size
A tire size like 225/45R17 breaks down into three parts:
the first number is the section width in millimeters
(the tire's width from sidewall to sidewall), the second is the
aspect ratio — the sidewall's height as a percentage of
that width — and the number after the "R" is the rim
diameter in inches. A letter prefix (P or LT) indicates
Passenger or Light Truck construction; its absence usually means
Euro-metric sizing.
Some trucks and off-road tires instead use "flotation" sizing, like
37X12.50R17 — here the numbers are the tire's overall
diameter and width in inches directly, with the rim diameter last.
Always verify against the tire information placard on your driver's-side door jamb or your owner's manual before purchasing — tire size can vary by factory option package even within the same trim.