tiresizelab.com

2023 Acura Integra Tire Fitment

3 factory tire sizes across trims — select yours below.

Trim fitment

Trim(s) OEM size
Base 215/45R18 Specs →
A-Spec 235/40R18 Specs →
Type S 265/30R19 Specs →
OEM size
235/40R18
Diameter
25.4″
Sidewall
3.7″
Revs / mile
794

About 2023 Acura Integra fitment

The 2023 Acura Integra A-Spec ships from the factory with 235/40R18 tires, giving a 25.40″ overall diameter and 794 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 25.40″ to preserve correct readings. This model year ships in multiple configurations with different OEM tire sizes (235/40R18, 215/45R18, 265/30R19), so confirm your exact trim badge before ordering. The smallest recommended upsize is 225/45R18 — a 2.25% diameter change — which keeps the speedometer inside factory tolerance while adding marginal ride height and sidewall compliance. The most aggressive option shown, 235/35R19, runs 0.29% taller and will likely need clearance checking on stock suspension. For a direct replacement, look for brands offering 235/40R18 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
225/45R18 25.97″ +2.25% Details →
255/40R18 26.03″ +2.48% Details →
245/35R19 25.75″ +1.38% Details →
225/40R19 26.09″ +2.70% Details →
245/40R18 25.72″ +1.24% Details →
215/45R18 25.62″ +0.85% Details →
235/45R18 26.33″ +3.64% Details →
235/35R19 25.48″ +0.29% Details →

Check speedometer error before upsizing

Type to search · try 275/65R18 or "33" for inch aliases
Common upsizes from 235/40R18:
Don't know your stock size? Load it by vehicle:

235/40R18

Diameter
25.4″ / 645.2mm
Section Width
9.25
Sidewall
3.7″ / 94mm
Circumference
79.8
Revs/Mile
794
See tires in 235/40R18

225/45R18

Diameter
25.97″ / 659.7mm
Section Width
8.86
Sidewall
3.99″ / 101.25mm
Circumference
81.59
Revs/Mile
777
See tires in 225/45R18
235/40R18 · 25.4225/45R18 · 25.97

Speedometer & Diameter Impact

Diameter Change
+2.25%
Sidewall Change
+0.29″
Revs/Mile Δ
-17
mph

At an indicated 60 mph, your actual speed is 61.35 mph (98.73 km/h). Your speedometer reads 2.25% low versus actual speed.

Speedometer impact if you upsize from 235/40R18

Acura Integra — other model years