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2024 Honda Ridgeline Tire Fitment

Factory tire size: 245/60R18. Overall diameter 29.57″ (751.2 mm), 682 revs/mile.

OEM size
245/60R18
Diameter
29.57″
Sidewall
5.79″
Revs / mile
682

About 2024 Honda Ridgeline fitment

The 2024 Honda Ridgeline Black Edition ships from the factory with 245/60R18 tires, giving a 29.57″ overall diameter and 682 revs per mile. This is the reference size the factory speedometer, odometer, ABS, and TPMS were calibrated against, so any replacement tire should stay close to 29.57″ to preserve correct readings. All 2024 Ridgeline trims share the same 245/60R18 factory size, so fitment is straightforward across the range. The smallest recommended upsize is 235/55R20 — a 2.04% diameter change — which keeps the speedometer inside factory tolerance while adding marginal ride height and sidewall compliance. The most aggressive option shown, 265/50R20, runs 2.90% taller and will likely need clearance checking on stock suspension. For a direct replacement, look for brands offering 245/60R18 in all-season, highway, or terrain-appropriate compounds — the OEM spec typically emphasizes fuel economy and tread life over grip, so aftermarket replacements often unlock better wet performance or off-road capability at similar cost. Before committing to an upsize, confirm wheel-well clearance at full steering lock and suspension compression, and verify the chosen size does not conflict with snow chains, tire-fit sensors, or any lift-kit hardware already installed.

Upsize options

Size Diameter Δ vs OEM
235/55R20 30.18″ +2.04% Details →
235/60R19 30.1″ +1.78% Details →
255/60R18 30.05″ +1.60% Details →
255/55R19 30.04″ +1.58% Details →
255/50R20 30.04″ +1.57% Details →
235/65R18 30.03″ +1.53% Details →
275/55R18 29.91″ +1.13% Details →
265/50R20 30.43″ +2.90% Details →

Check speedometer error before upsizing

Type to search · try 275/65R18 or "33" for inch aliases
Common upsizes from 245/60R18:
Don't know your stock size? Load it by vehicle:

245/60R18

Diameter
29.57″ / 751.2mm
Section Width
9.65
Sidewall
5.79″ / 147mm
Circumference
92.91
Revs/Mile
682
See tires in 245/60R18

235/55R20

Diameter
30.18″ / 766.5mm
Section Width
9.25
Sidewall
5.09″ / 129.25mm
Circumference
94.8
Revs/Mile
668
See tires in 235/55R20
245/60R18 · 29.57235/55R20 · 30.18

Speedometer & Diameter Impact

Different rim — new wheels required
Diameter Change
+2.04%
Sidewall Change
-0.70″
Revs/Mile Δ
-14
mph

At an indicated 60 mph, your actual speed is 61.22 mph (98.53 km/h). Your speedometer reads 2.04% low versus actual speed.

Speedometer impact if you upsize from 245/60R18

Honda Ridgeline — other model years