2003 Hummer H1 — Base Model
The 2003 Hummer H1 Base Model came from the factory equipped with 37X12.50R17 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.
37X12.50R17
| Overall diameter | 37" |
|---|---|
| Section width | 12.5" |
| Rim diameter | 17" |
| Revolutions per mile | ~545 |
Compare prices at:
What this size means for your Hummer H1
On the 2003 Hummer H1 Base Model, the factory 37X12.50R17 is a flotation off-road size, quoted directly in inches rather than metric — about 37″ tall and 12.5″ wide on a 17″ wheel, turning roughly 545 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 Hummer H1 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.
Hummer H1 tire sizes by year
- 2006 Hummer H1 37X12.50R17
- 2005 Hummer H1 37X12.50R17
- 2004 Hummer H1 37X12.50R17
- 2002 Hummer H1 37X12.50R17
- 2001 Hummer H1 37X12.50R17
- 2000 Hummer H1 37X12.50R17
- 1999 Hummer H1 37X12.50R16.5
- 1998 Hummer H1 37X12.50R16.5
- 1997 Hummer H1 37X12.50R16.5
- 1996 Hummer H1 37X12.50R16.5
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.