2007 Lincoln Navigator — L 2wd
The 2007 Lincoln Navigator L 2wd shipped with 2 different factory tire sizes, depending on the wheel package it left the factory with (this can also reflect a staggered front/rear setup). Check your tire sidewall or door placard to confirm which one applies to your vehicle.
This trim shipped with more than one tire size (staggered fitment, front/rear, or optional wheel package). Confirm which one matches your vehicle by checking your tire sidewall or door placard.
255/70R18
| Section width | 255 mm |
|---|---|
| Aspect ratio (sidewall height) | 70% (178.5 mm) |
| Rim diameter | 18" |
| Overall tire diameter | ~32.1" |
| Revolutions per mile | ~629 |
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275/55R20
| Section width | 275 mm |
|---|---|
| Aspect ratio (sidewall height) | 55% (151.3 mm) |
| Rim diameter | 20" |
| Overall tire diameter | ~31.9" |
| Revolutions per mile | ~632 |
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What this size means for your Lincoln Navigator
On the 2007 Lincoln Navigator L 2wd, the factory 255/70R18 measures about 32.1″ in overall diameter with a 178.5 mm (7″) sidewall, and completes roughly 629 revolutions per mile. Its 70-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.
The 255/70R18 and 275/55R20 roll within 0.2″ (0.6%) of each other in overall diameter, so they are interchangeable from a speedometer standpoint — the second size is an optional wheel package rather than a different rolling size.
On a vehicle of this age, the Lincoln Navigator 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 2007 Lincoln Navigator trims
Lincoln Navigator tire sizes by year
- 2026 Lincoln Navigator 275/50R22 / 285/40R24
- 2025 Lincoln Navigator 275/50R22 / 285/40R24
- 2024 Lincoln Navigator 285/45R22
- 2023 Lincoln Navigator 285/45R22
- 2022 Lincoln Navigator 285/45R22
- 2021 Lincoln Navigator 285/45R22
- 2020 Lincoln Navigator 285/45R22
- 2019 Lincoln Navigator 285/45R22
- 2018 Lincoln Navigator 275/55R20
- 2017 Lincoln Navigator 275/55R20 / 285/45R22
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.