2026 Subaru Ascent Bulb Sizes & Tire Sizes
The short answer
The 2026 Subaru Ascent has sealed LED headlights with no replaceable low-beam bulb, and rides on 245/60R18 tires as standard (Premium); Limited, Limited Bronze Edition, Touring and Onyx Edition Touring use 245/50R20.
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Tire sizes by trim
Premium (standard)
245/60R18 105H · 35 psi Search Amazon for 245/60R18 tires
Limited, Limited Bronze Edition, Touring, Onyx Edition Touring
245/50R20 102H · 33 psi Search Amazon for 245/50R20 tires
The size on the placard inside the driver's door jamb is the one your car left the factory with. Match that, not this table, if they differ; a previous owner may have changed wheels.
Bulb sizes
Low beam
Sealed LED, no replaceable bulb
High beam
Sealed LED, no replaceable bulb
Fog light
Sealed LED, no replaceable bulb
Wheel specs and lug torque
Lug nut torque
89 ft-lbs (121 Nm)
Factory wheel sizes
18x7.5, 20x7.5
Key fob, battery and sensors
Key fob battery
CR2032 Search Amazon for CR2032
Relearn
auto (drive)
Roof rack and roof load
Roof load limit
176 lb (80 kg), evenly spread, while driving
Rack mounting
Raised side rails Search Amazon for crossbars
Dimensions, weight and fuel
Length
196.8" (500 cm)
Width
76" (193 cm)
Height
71.6" (182 cm)
Wheelbase
113.8" (289 cm)
Ground clearance
8.7" (22 cm)
Fuel
Gasoline
Octane
87 (regular)
Fuel tank
19.3 gal (73 L)
Worth knowing about the 2026 Ascent
- LED lighting. The low beam, high beam, fog light are sealed LED units with no user-replaceable bulb. A failure means replacing the assembly.
- Spare. This vehicle carries a compact (temporary) spare, size T165/90D18. Search Amazon for spare tires →
- Tire chains. The manual restricts tire chains on this vehicle. The limits are in the next note; read them before you fit anything.
- Tires. The manual says tire chains cannot be used, and a non-chain SAE Class S traction device goes on the front wheels only if its maker recommends it.
- Torque. Tighten lug nuts to 89 ft-lbs in a star pattern with a torque wrench, and re-check after the first 50 miles. This figure is from the owner's manual; an impact gun will overshoot it.
- Roof load. The 176 lb roof limit is the dynamic figure for driving and includes the rack itself. It is not a limit for a rooftop tent when parked; the manual gives no static figure.
- Roof. The limit covers crossbars, carrier and cargo together while driving; the 700 lb figure in the manual applies only when parked.
- Fuel. The manual recommends 91 octane when towing a trailer.