How to Choose Your Tire Setup — Toyota 4Runner 5th Generation (2010–2024)
Choosing your tires is probably the most important mod you can do to your 4Runner. The right rubber completely changes how the truck behaves — whether you're hauling down the 401, crawling through the Rockies, or bashing through some backroads in the Nova Scotia. But with so many options out there, it's easy to get lost. This guide is here to help you pick the setup that fits your driving style, your usage, and your budget.
The Basics: Reading Tire Sizes
Before we get into the recommendations, here's how to read a tire size like 285/70R17:
- 285 → Tire width in millimetres
- 70 → Sidewall height, expressed as a % of the width (here 70% of 285mm)
- R → Radial construction
- 17 → Rim diameter in inches
The bigger the first number, the wider the tire. The bigger the second number, the taller the sidewall — and the larger the overall diameter.
Stock and Why Most People Move On
The 5th gen 4Runner comes from the factory with 265/70R17s, which gives you a diameter of roughly 31.6 inches. It's a decent tire, but pretty tame for a rig with this much potential.
Most owners make a change for three reasons:
- Better off-road traction — a wider, taller tire gives you more contact patch and a better ability to float on soft surfaces like mud, snow, and sand
- More ground clearance — a larger diameter lifts the belly of the truck
- Looks — let's be honest, a 4Runner sitting on proper rubber just looks way better in the driveway
Driver Profiles and Recommended Setups
🟢 The Daily Driver
You use your 4Runner mostly on pavement — highway commuting, city driving, the occasional dirt road up to the chalet.
Best setup: 275/70R17
- Diameter: ~32.2 inches
- Zero modifications needed — bolt-on fitment
- Slight improvement in ground clearance and traction
- Minimal speedo/odometer error (~1.7%)
- Works with stock wheels (7 to 8.5 inch width)
This is the sweet spot for the majority of 4Runner owners in Canada. You get a better stance and a bit more capability without spending a loonie on mods or losing your highway manners.
🟢 The Daily Driver — Narrow Profile (Pizza Cutter)
You want a taller tire but prefer a narrower footprint — especially handy for our winters.
Best setup: 255/75R17
- Diameter: ~32.1 inches
- Zero modifications needed
- Cuts through snow and mud better thanks to the narrower width
- Recommended wheel: 6.5 to 8.5 inches
A fantastic choice for anywhere east of the Rockies where winter is six months long. The narrow profile creates more pressure per square inch on the ground, which means better penetration through snow and slush. If you're running all-seasons or dedicated winters on a second set of rims, this is worth considering.
🟡 The Weekend Warrior
You're out on logging roads, fire roads, and forest trails on a regular basis — maybe a few wheeling trips a season out to places like Sudbury, the Saguenay, or out West.
Best setup: 285/70R17
- Diameter: ~32.7 inches
- Minor modifications required: liner push or replacement, mudflap removal, light plastic trimming depending on wheel offset
- Major improvement in off-road performance
- Recommended wheel: 7.5 to 9 inches
This is the best off-road setup without a lift. You gain serious capability without investing in a lifted suspension. Most 4Runner owners who wheel regularly end up here, and for good reason — it's the best bang for your buck.
🟡 The Weekend Warrior — Narrow Profile
Same usage as above, but you prefer the narrower sidewall.
Setup: 255/80R17
- Diameter: ~33.1 inches
- Minor modifications required
- Recommended wheel: 6.5 to 8.5 inches
A solid choice for those who want to size up without widening the truck. Works well in tight bush trails where every inch of clearance from the treeline counts.
🔴 The Serious Wheeler — Wide Setup
You're doing the real stuff — rock gardens, river crossings, technical trails. You want to maximize contact patch.
Setup: 305/70R17
- Diameter: ~33.8 inches
- Major modifications required: minimum 2 to 3-inch lift, Body Mount Chop (BMC) highly recommended
- Maximum contact patch
- Recommended wheel: 8 to 9.5 inches
At this level, you're building a proper rig. A lift is non-negotiable to clear the tires at full compression, and the BMC (cutting and modifying the front body mount) is usually needed to fit the width at full lock.
🔴 The Serious Wheeler — Tall Profile
You want height and ground clearance over width. Think rock crawling, washouts, and the gnarlier stuff.
Setup: 275/85R17
- Diameter: ~33.8 inches
- Major modifications required: 2-3"+ lift, BMC
- Excellent height-to-width ratio
- Recommended wheel: 7.5 to 9.5 inches
Popular with folks doing rock crawling or serious backcountry where ground clearance is everything. Keeps the overall width manageable while still giving you a big, tall tire.
🔴 The Full Send
You want the biggest tire that'll fit. End of discussion.
Setup: 315/70R17
- Diameter: ~34.6 inches
- Major modifications required: 3"+ lift, BMC, likely a re-gear
- Recommended wheel: 8.5 to 10 inches
At this point, you're into a full build. A re-gear of the differentials (typically 4.88 or 5.29 ratios) is strongly recommended to make up for the torque loss from the bigger tires — otherwise the truck will feel gutless pulling out of a ditch or crawling up a grade.
Impact on Your Odometer and Speedo
A bigger tire means each rotation covers more distance than what your truck's computer expects — so your odometer and speedometer will under-read.
| Size | Difference vs. Stock |
|---|---|
| 265/70R17 (stock) | 0% |
| 275/70R17 | ~-1.7% |
| 285/70R17 | ~-3.4% |
| 255/80R17 | ~-4.4% |
| 305/70R17 | ~-6.5% |
| 275/85R17 | ~-6.6% |
| 315/70R17 | ~-9.0% |
An error of 3 to 6% is generally fine to live with. Beyond that, it's worth picking up a Speedohealer or having the control module recalibrated — especially if you're worried about speeding tickets on the Trans-Canada or your warranty.
Modification Levels Explained
✅ No Modifications Required
For 275/70R17, 255/75R17, 265/70R17 stock
- Bolt straight onto your stock wheels
- No rubbing in normal driving
- Works with the factory suspension
⚠️ Minor Modifications
For 285/70R17, 255/80R17
- Push or replace the inner liners (the plastic fender liners) to make room at full compression
- Remove or trim the mudflaps — the rear ones especially can rub
- Light trimming of the plastic trim depending on your wheel offset
- How much trimming you need depends heavily on your wheel offset — a more negative offset (e.g. -25mm) pushes the tire outward, which can reduce inner rubbing but may bring the tire closer to the fender lip
🔴 Major Modifications
For 305/70R17, 275/85R17, 315/70R17
- 2 to 3-inch lift minimum — a proper suspension lift (Old Man Emu, Ironman 4x4 Elka, Arb, etc.) is mandatory
- Body Mount Chop (BMC) — modifying the front body mount to clear the tire at full steering lock
- Differential re-gear strongly recommended for tires 34 inches and up (4.88 or 5.29 ratios)
Picking Your Wheels
The wheel matters just as much as the tire. Here's what to keep in mind:
Width: The wheel width should match the tire. A tire on a wheel that's too narrow will bulge outward; too wide and the sidewall flattens out, hurting lateral traction on gravel and loose surfaces.
Offset: Offset determines how far in or out the wheel sits in the wheel well. On a 5th gen 4Runner:
- Stock offset: +30mm
- A lower offset (e.g. 0mm or -12mm) widens your track, improves stability, but can cause rubbing on the fenders or mud flaps
- Spacers are an option, but always check clearance with the brakes, suspension, and UCA before buying
Material: Aluminum alloy for weight savings and looks; steel for serious off-road durability (bends rather than cracks on a rock hit, and you can beat it back into shape with a hammer on the trail).
Popular Brands in Canada
All-Terrain (AT) — great balance of road and trail:
- BF Goodrich All-Terrain T/A KO2 (the go-to for a reason)
- Falken Wildpeak AT4W (excellent in snow — M+S + 3PMSF rated)
- Toyo Open Country AT III
- Cooper Discoverer AT3
- Nokian Outpost N-At
- Mickey Thompson Baja Boss AT
- Nitto Trail Grappler G3
Mud-Terrain (MT) — for the serious off-road stuff:
- BF Goodrich Mud-Terrain T/A KM3
- Toyo Open Country MT
- Nitto Trail Grappler
- Mickey Thompson Baja Boss MT
A note on winters: If you're running all-terrain tires year-round in Quebec or Ontario, make sure they carry the 3-Peak Mountain Snowflake (3PMSF) symbol — it's required to be considered a winter tire under provincial regulations in Quebec (December 1 to March 15).
The Bottom Line
There's no one-size-fits-all setup — it all comes down to how you use your truck. Here's the quick cheat sheet:
- Mostly highway and city driving → 275/70R17, no mods
- Best all-around setup → 275/70R17 or 285/70R17
- Best off-road without a lift → 285/70R17
- Full build → 305/70R17 or 275/85R17 with lift + BMC
Got questions about your specific setup, or want a recommendation based on how you actually use your rig? The M.A.P. Off Road crew is here to help.
