2005 Jeep Wrangler — Rocky Mountain
The 2005 Jeep Wrangler Rocky Mountain came from the factory equipped with 30X9.50R15 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.
30X9.50R15
| Overall diameter | 30" |
|---|---|
| Section width | 9.5" |
| Rim diameter | 15" |
| Revolutions per mile | ~672 |
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What this size means for your Jeep Wrangler
On the 2005 Jeep Wrangler Rocky Mountain, the factory 30X9.50R15 is a flotation off-road size, quoted directly in inches rather than metric — about 30″ tall and 9.5″ wide on a 15″ wheel, turning roughly 672 revolutions per mile. Flotation sizes like this are chosen for traction and ground clearance rather than on-road refinement.
On a vehicle of this age, the Jeep Wrangler 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 2005 Jeep Wrangler trims
Jeep Wrangler tire sizes by year
- 2026 Jeep Wrangler 315/70R17
- 2025 Jeep Wrangler 285/70R17
- 2024 Jeep Wrangler 285/70R17
- 2023 Jeep Wrangler 245/75R17
- 2022 Jeep Wrangler 285/70R17
- 2021 Jeep Wrangler 255/70R18
- 2020 Jeep Wrangler 245/75R17
- 2019 Jeep Wrangler 285/70R17
- 2018 Jeep Wrangler 285/70R17
- 2017 Jeep Wrangler 255/75R17
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.