What Size Tires Fit a Stock 5th Gen 4Runner?
If you drive a 2010–2024 4Runner, bigger tires are probably one of the first mods on your list. They change the whole look of the truck and they're the single best bang-for-buck upgrade for traction off-road. But how big can you go on stock suspension before the rubbing starts — and before you're trimming fenders or chopping body mounts? Here's the straight answer.
The quick answer
| Tire size | Approx. diameter | Fits stock suspension? |
|---|---|---|
| 265/70R17 (stock) | ~31.6" | Yes — this is what it came with |
| 275/70R17 | ~32.2" | Yes — biggest size with no mods |
| 285/70R17 | ~32.7" | Usually needs trimming |
265/70R17 — stock
This is the factory size on SR5, TRD Off-Road, TRD Pro, and most 5th gen trims (the Limited runs a 20" wheel setup instead). It fits perfectly because Toyota designed the wheel wells around it. If you want zero risk of rubbing and zero modifications, staying at stock size in a more aggressive all-terrain tread is a legitimate move.
275/70R17 — the largest tire size most owners run without modifications
About 0.6" taller than stock, the 275/70R17 is the largest tire you can bolt onto a stock 5th gen without touching anything. Most trucks clear it, though slight rubbing can occur depending on wheel offset, alignment, tire model, and mud flaps.. In the rare case you get rubbing, it's minor — usually just the front mud flaps or the front edge of the fender liner at full lock — and the fix is the simple fender liner push-back mod or trimming the mud flap. If your factory flaps are looking rough, the ARK Splash Guards are a full-coverage replacement that fits 2010–2024 4Runners. No lift needed, no chop needed.
285/70R17 — the classic 33" (with caveats)
This is the size everyone wants — the near-33-inch (about 32.7-inch) look. But here's the honest version: almost all 285/70R17s will rub somewhere on a stock truck. Common contact points are the front fender liner, the mud flaps, and on some setups the body mount.
The good news: pushing back the fender liners and trimming the front bumper cover is a simple driveway job (tape, a Dremel, and some patience), and it solves the problem for most trucks on stock wheels. What makes it worse is pushing the wheels outward — aftermarket wheels with aggressive offset or wheel spacers move the tire into the body mount, and that's when a body mount chop enters the conversation. A proper alignment with caster pushed toward the high end of spec also helps.
Does a lift fix rubbing?
Not really — and this surprises a lot of people. Rubbing is about where the tire sits in the wheel well when you turn, which is controlled by wheel width, offset, and backspacing. A lift raises ride height but doesn't move the tire's position at full lock. A lift absolutely helps off-road (more clearance at full stuff, better angles), but if a 285 rubs on the street at full lock stock, it'll rub lifted too until you trim.
Don't forget the spare
Toyota gives you a full-size spare from the factory, and the stock underbody location fits up to about a 33" tire — so 275s and most 285s tuck underneath just fine. If you go bigger than that, you'll need a rear bumper or hitch-mounted tire carrier.
What it'll cost you in MPG and ride
Bigger, heavier tires cost fuel — expect roughly 1–3 MPG less going from stock to 285s, depending on the tire and your driving. Also pay attention to load range: Load E tires are tougher but ride noticeably firmer than Load C, which matters if your 4Runner is a daily driver carrying kids and groceries most of the week.
Bottom line
Want zero hassle? Go 275/70R17 — biggest tire, no mods, done. Want the 33" look of 285/70R17? Budget a Saturday afternoon for trimming, keep your wheel offset close to stock, and get a good alignment. Either way, you're getting the best first mod a 4Runner can get.
Frequently asked questions
What is the biggest tire that fits a stock 5th Gen 4Runner with no modifications?
According to this guide, the 275/70R17 (about 32.2 inches) is the largest size most owners run with no modifications and no lift. Slight rubbing can still occur on some trucks depending on wheel offset, alignment, tire model, and mud flaps, and is usually fixed with a fender liner push-back or trimming the mud flap.
Will 285/70R17 tires rub on a stock 5th Gen 4Runner?
Usually, yes, somewhere. The guide says almost all 285/70R17s rub on a stock truck, commonly on the front fender liner, mud flaps, and on some setups the body mount. Pushing back the fender liners and trimming the front bumper cover solves it for most trucks on stock wheels.
Does lifting my 4Runner stop tire rubbing?
Not by itself. Rubbing is about where the tire sits in the wheel well when you turn, which is controlled by wheel width, offset, and backspacing. A lift helps off-road, but a 285 that rubs at full lock on stock suspension will generally still rub lifted until you trim.
Will a larger spare still fit in the stock location?
The stock underbody location fits up to about a 33-inch tire, so 275s and most 285s tuck underneath. Bigger than that requires a rear bumper or hitch-mounted tire carrier.
How will bigger tires affect fuel economy and ride?
Expect roughly 1–3 MPG less going from stock to 285s, depending on the tire and your driving. Load range also matters: Load E tires are tougher but ride noticeably firmer than Load C.
Which size should I choose?
For zero hassle, the guide recommends the 275/70R17. For the 33-inch look of the 285/70R17, budget time for trimming, keep wheel offset close to stock, and get a good alignment.