By the Rims & Tires Team
Compiled & reviewed by our West Georgia tire & wheel research team · Updated 2026-08-01
Subaru's tire story starts with one fact that matters more here than on almost any other make: full-time Symmetrical All-Wheel Drive needs all four tires rolling at close to the same circumference, or the center differential fights itself. That's true whether you're driving a base Impreza or the off-road Wilderness trims covered here. After that, fitment splits by trim. Wilderness models get taller sidewalls for ground clearance, and the electric Solterra adds real weight to the equation.
Why Symmetrical AWD makes tire-matching non-negotiable
Every Subaru with all-wheel drive sends power to all four wheels essentially all the time, not just when the front or rear starts to slip. That system depends on all four tires covering close to the same distance per rotation. Mismatched tread depth changes a tire's rolling circumference; a worn tire is slightly smaller than a fresh one. On a Symmetrical AWD Subaru, that difference gets fed straight into the center differential, which has to work to compensate. Do it long enough and you can genuinely stress the drivetrain, not just wear tires unevenly.
Subaru's own guidance, echoed across every trim in this guide, is to replace all four tires together, or if you're replacing in pairs, keep tread depth within about 2/32 inch across the full set. If one tire gets damaged early and the rest are still healthy, a shop can sometimes shave a new tire to match the others rather than force a full replacement. This rule matters more on a Subaru than on most crossovers with on-demand AWD, because the Symmetrical system is engaged all the time.
How fitment changes across the Wilderness, Sport, and Solterra trims
The Wilderness trims exist because Subaru noticed Outback and Crosstrek owners were already doing rugged, adventure-style driving and wanted a factory answer. Both step up ground clearance significantly, 9.5 inches on the Outback Wilderness, 9.3 on the Crosstrek Wilderness, and both pair that with a taller-sidewall tire for extra cushioning off-road. The Outback Wilderness runs 225/65R17, taller than the Limited and Touring trims' 225/60R18. The Crosstrek Wilderness runs 225/60R17 on its own suspension setup, even though that's the same raw tire size as the base and Premium Crosstrek.
The Forester Sport takes a different route. It's a handling upgrade, not an off-road one, with a stiffer suspension and 18-inch wheels running 225/55R18 instead of the base trim's 17s. Don't confuse it with the Forester Wilderness, which uses a different, taller 225/60R17 for ground clearance. Same nameplate, two unrelated trim strategies.
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Subaru doesn't run an OEM tire-approval program
Unlike Audi, BMW, or Mercedes, Subaru doesn't stamp a brand-specific approval code on factory tires or publish an approved list. The Outback Wilderness and Crosstrek Wilderness both ship on crossover-tuned all-terrain tires, but Subaru has sourced more than one supplier across the Wilderness lineup, so the exact brand and model on your specific build can differ even within the same trim.
That makes the door jamb sticker, and the tire's own sidewall, the real source of truth. Confirm the size, load index, and speed rating there, and any tire meeting those numbers is a legitimate replacement, factory brand or not.
The Solterra adds weight to the AWD equation
Subaru's first all-electric SUV shares its e-TNGA platform with the Toyota bZ4X, and the two are close to identical under the skin, including matching tire sizes trim-for-trim. At roughly 4,400 lbs, the Solterra is significantly heavier than a comparable gas Forester or Outback, and its Symmetrical AWD system uses dual electric motors instead of a mechanical differential, which makes the matched-tread rule above just as important, if not more so.
The factory Bridgestone Ecopia tire is chosen for range, not grip. Subaru and Toyota both spec a low-rolling-resistance compound to protect the EPA-rated 227-mile figure. Swapping to a grippier all-season is a reasonable trade for better wet handling, but expect to give back some range for it, the same trade-off bZ4X owners make.
What to check before you buy
Start with the door jamb sticker, not your old tire's size from memory. The Outback Wilderness and Crosstrek Wilderness both technically share raw tire sizes with lower trims, but the Wilderness suspension and gearing are tuned around a taller tire, so don't assume interchangeability without checking your specific trim.
Then apply the matched-tread rule above every time: replace all four together where you can, and if you can't, keep the set within about 2/32 inch of each other. If you're deciding between an all-terrain and an all-season on a Wilderness trim, be honest about how much dirt you actually see. A quieter all-season handles most West Georgia driving fine, and the all-terrain earns its keep only if you're really using the extra clearance.
Subaru models folded into this guide
| Model | Generation / notes | Common OEM sizes | What it changes |
|---|---|---|---|
| Outback Wilderness | Off-road trim, 9.5-in ground clearance, shorter final-drive ratio | 225/65R17 (same as Base/Premium) | Taller sidewall than Limited/Touring's 225/60R18; factory all-terrain, brand varies by build |
| Crosstrek Wilderness | Off-road trim, 9.3-in clearance, raised suspension, skid plate | 225/60R17 | Same raw size as base/Premium Crosstrek; OEM Yokohama Geolandar A/T G015, 3PMSF-rated |
| Forester Sport | Handling-focused sport trim, 18-in wheels, standard Symmetrical AWD | 225/55R18 (same as Limited/Touring) | Not the same as Forester Wilderness's taller 225/60R17 |
| Solterra | First all-electric Subaru, ~4,400 lbs, e-TNGA platform shared with Toyota bZ4X | 235/60R18 (Premium), 235/50R20 (Limited/Touring) | OEM Bridgestone Ecopia low-rolling-resistance tire; EPA range 227 miles |
Frequently asked
Why does Subaru care so much about matched tires?
Because Symmetrical All-Wheel Drive sends power to all four wheels full-time, not just when one slips. Mismatched tread depth changes a tire's rolling circumference, which the center differential has to compensate for constantly. Subaru's own guidance is to replace all four tires together, or keep tread depth within about 2/32 inch across the set if you replace in pairs.
Do the Wilderness trims need all-terrain tires?
It depends on how you actually drive. Subaru fits a crossover-tuned all-terrain from the factory because Wilderness buyers are expected to use the extra ground clearance, so if you're regularly on gravel or forest roads, matching that makes sense. If you've mostly settled into pavement, a quality all-weather tire rides quieter and lasts longer while still handling West Georgia winters.
Does Subaru have an OEM tire-approval marking like BMW or Mercedes?
No. Subaru doesn't stamp a brand-specific code on approved tires or run a public approval program, and it's sourced more than one all-terrain supplier for the Wilderness lineup alone. Match the size, load index, and speed rating on your door jamb sticker, and any tire meeting those specs is a proper replacement.
Is the Solterra's tire different from a gas Subaru's?
Not in the sizing logic, but the Solterra is roughly 4,400 lbs, meaningfully heavier than a comparable Forester or Outback, and it shares its platform and tire sizes with the Toyota bZ4X. The factory Bridgestone Ecopia is tuned for range over grip, the same trade-off bZ4X owners deal with.
Can I put regular Outback or Crosstrek tires on the Wilderness trim?
Not always. The Outback Wilderness shares its raw 225/65R17 size with the Base and Premium trims but not with Limited, Onyx Edition, or Touring, which run 225/60R18 on a different wheel. Check your specific trim before assuming a size carries over.
Where can I get Subaru tires installed near me in West Georgia?
We match you with local shops around Carrollton and West Georgia that understand Subaru's matched-tread AWD rule and stock common sizes for the Wilderness, Sport, and Solterra trims. Tell us your trim and how you drive it, and we'll point you to a shop that gets it right. It's free.
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Last updated 2026-08-01. General guidance only — confirm specifics with a local shop for your exact vehicle.