Cooper Discoverer ATP II
6.6/10All-Terrain
Best for budget daily, light trail, retailer value.
3rd gen Tacoma · 2021
2021 Tacoma SR5 Trail package tire size.
The factory tire and wheel package for the 2021 Toyota Tacoma SR5 Trail package midsize pickup, the biggest tire it fits at each lift height, and upgrade sizes worked through.
Factory tire size
The 2021 Toyota Tacoma SR5 Trail package came from the factory with P265/70R16 tires on 16-in dark gray alloy wheels.
- On the 2021 SR5 Trail package, P265/70R16 measures 30.6 in tall and 10.4 in wide, with a 7.3 in sidewall and 659 revolutions per mile.
- The 2021 SR5 Trail package is listed as package on Double Cab SR5 package, with the tire recorded as all-season or all-terrain by package.
- Modeled estimate: a stock-height 3rd gen Tacoma like the 2021 SR5 Trail package tops out near 265/70R17 (~31.6 in) on factory offset. On its factory 16-inch wheel, the tallest size our reconciled rules publish at that height is 265/75R16 (31.6 in).
Stock size and dimensions
all-season or all-terrain by package on 16-in dark gray alloy
What 265/70R16 measures — diameter, width, sidewall, and the other Tacoma trims that ship it.
- Diameter
- 30.61 in
- Width
- 10.43 in
- Sidewall
- 7.30 in
- Revs / mile
- 659
Source for the 2021 Tacoma SR5 Trail package: Toyota 2021 Tacoma eBrochure.
What size tires does a 2021 Tacoma SR5 Trail package have, and what is the biggest that fits?
A 2021 Toyota Tacoma SR5 Trail package leaves the factory on P265/70R16 tires, 30.6 in tall, mounted on 16-in dark gray alloy wheels. Without a lift, the tallest size our reconciled fitment rules publish for this truck's 16-inch wheel is 265/75R16 at 31.6 in; a leveling kit does not change that answer. The table below runs the 2021 Tacoma SR5 Trail package through every lift height our 3rd gen Tacoma model covers, as a midsize pickup on factory-style offset — lower-offset wheels or spacers move each row up the work ladder.
| Spec | 2021 SR5 Trail package |
|---|---|
| Stock tire size | P265/70R16 |
| Overall diameter | 30.6 in |
| Section width | 10.4 in |
| Sidewall height | 7.3 in |
| Revolutions per mile | 659 |
| Wheel | 16-in dark gray alloy |
| Tire type | all-season or all-terrain by package |
| Availability | package on Double Cab SR5 package |
| Setup | Tallest size on the factory 16-inch wheel | Change from 265/70R16 | Clearance work our per-size rules add | Modeled 3rd gen ceiling (any wheel) and the work it lists |
|---|---|---|---|---|
| Stock height | 265/75R16 (31.6 in) | +1.04 in (+3.41%) | None | 265/70R17 (31.6 in) |
| Leveling kit (1-2 in) | 265/75R16 (31.6 in), same as the row above | +1.04 in (+3.41%) | None beyond the setup | 275/70R17 (32.2 in); remove mud flaps |
| 3 in suspension lift | 265/75R16 (31.6 in), same as the row above | +1.04 in (+3.41%) | None beyond the setup | 285/70R17 (32.7 in); fender liner trim / pushback, aftermarket UCAs recommended, and cab mount chop for rub-free off-road |
| 4-6 in lift | 285/75R16 (32.8 in) | +2.22 in (+7.27%) | Minor changes | 35x12.50R17 (35.0 in); cab mount chop / relocation, pinch weld, high fender-liner trim, and firewall and front-bumper trimming |
Upgrade sizes for a 2021 Tacoma SR5 Trail package, and what each needs
Two steps up from the 2021 Tacoma SR5 Trail package's P265/70R16, all on its factory 16-inch wheel: 265/75R16, a mild upgrade that clears at stock height; and 285/75R16, a balanced 33 that needs a 4-6 in lift with minor changes. The speedometer column assumes the truck is still calibrated for the factory tire, and every fit tier is the stricter of our two fitment sources — a modeled estimate for this truck, not an install we measured.
| Size | Diameter | Change from 265/70R16 | True speed when the speedometer reads 60 mph | Fit tier (stricter source) |
|---|---|---|---|---|
| 265/75R16 | 31.6 in | +1.04 in (+3.41%) | 62.0 mph | Stock height |
| 285/75R16 | 32.8 in | +2.22 in (+7.27%) | 64.4 mph | 4-6 in lift, minor changes |
Worked example: will 285/75R16 fit a 2021 Tacoma SR5 Trail package?
Going from the 2021 Tacoma SR5 Trail package's 265/70R16 to 285/75R16: the new tire is 32.8 in tall against 30.6 in, a +7.27% change in diameter, and 0.8 in wider. With the speedometer still calibrated for the factory tire, an indicated 60 mph is really about 64.4 mph and an indicated 70 about 75.1 mph. On fit, 285/75R16 needs a 4-6 in lift with minor changes on this truck, the stricter of our two sources (the generation matrix's modeled ceilings). It is a modeled estimate, not a measured install — confirm the exact tire model's moulded diameter and your wheel offset before ordering.
| Measurement | 265/70R16 | 285/75R16 | Change |
|---|---|---|---|
| Overall diameter | 30.6 in | 32.8 in | +2.22 in (+7.27%) |
| Section width | 10.4 in | 11.2 in | +0.79 in |
| Sidewall height | 7.3 in | 8.4 in | +1.11 in |
| Revolutions per mile | 659 | 614 | -45 |
| True speed at an indicated 60 mph | 60.0 mph | 64.4 mph | +4.36 mph |
What P265/70R16 measures on a 2021 Tacoma SR5 Trail package
P265/70R16 is 265 mm wide at a 70 percent sidewall ratio on a 16-inch wheel. Through standard tire math that is 30.6 in of overall diameter, 10.4 in of section width, a 7.3 in sidewall, and about 659 revolutions per mile — the figures behind the 2021 SR5 Trail package's speedometer calibration. That package is package on Double Cab SR5 package, riding 16-in dark gray alloy wheels.
Note the P prefix on the 2021 SR5 Trail package's factory size (P265/70R16): that is a P-metric passenger-rated tire, not an LT light-truck size. The same 265/70R16 in LT form runs a stiffer casing, a higher load rating, and more weight.
P265/70R16 is not exclusive to the SR5 Trail package in 2021: TRD Off-Road and TRD Pro run it too. Wheel finish, package content, and drivetrain separate those trims rather than tire size, so a tire that fits one fits the others.
Bigger tires on a 2021 Tacoma SR5 Trail package
Staying on the factory 16-inch wheel of a 2021 SR5 Trail package, 1 size in our candidate set clears at stock height with no lift and no clearance work, and inside the modeled stock ceiling of 31.6 in: 265/75R16 at 31.6 in. Set against the 2021 SR5 Trail package's P265/70R16, the closest of them comes out 1.0 in taller and the same width. A small 16-inch step up that keeps width close to stock.
Past that, the 16-inch sizes our set offers a 2021 SR5 Trail package need suspension or clearance work: 285/75R16 (32.8 in) sits behind a 4-6 in lift with minor changes. Where the two sources disagree, the stricter tier is the one shown: the 3rd gen Tacoma matrix's modeled ceilings are stricter than our per-size table for 285/75R16. Those tiers come from our fitment rule-set, not a truck we measured; lower-offset wheels push each one harder into the fender.
Add a leveling kit and our generation fitment matrix estimates a 3rd gen Tacoma at 275/70R17 (~32.2 in) — 1.6 in taller than the 2021 SR5 Trail package's P265/70R16. Clearance work it lists: Remove mud flaps. 285/70R17 (33s) fits street-only with fender-liner trim + heat gun, but rubs off-road at full lock. These are modeled estimates, not measured installs: offset, alignment, and the tire's real moulded size all move the answer.
Where the SR5 Trail package sits in the 2021 Tacoma lineup
Sorted by factory tire diameter, the 2021 Tacoma trims we cover run from P245/75R16 at 30.5 in (SR and SR5) up to P265/70R16 at 30.6 in (TRD Off-Road, TRD Pro, and SR5 Trail package). The SR5 Trail package's P265/70R16 is 4th of the 4 distinct sizes in that spread: nothing else in the 2021 range we cover leaves the factory on a taller tire.
Context on the source data: 2021 through 2022 share the same factory tire lineup, and 2021 sits inside that span. Nothing in the sources separates those years at the trim level, so a SR5 Trail package from any of them should read the same on the placard.
Top-ranked 265/70R16 tires for a 2021 Tacoma SR5 Trail package
Our tire dataset scores 19 models available in 265/70R16, the size the 2021 Tacoma SR5 Trail package runs from the factory on all-season or all-terrain by package. Below are the 3 best-ranked all-terrain models in that size, plus mild all-terrain pick Destination A/T2 as a deliberate contrast — it scores differently because it is built for a different job.
All-Terrain
Best for daily all weather, moderate trail, snow.
All-Terrain
Best for value, daily all weather, light trail.
Mild All-Terrain
Best for quiet daily, light trail, snow.
Scores are a 0-10 editorial synthesis of published reviews, manufacturer specifications, and retailer fitment data — not tires we tested ourselves. Availability in 265/70R16 for the 2021 SR5 Trail package comes from that dataset's own size catalog, and the shortlist follows the dataset's editorial rank — the 0-10 figure beside each pick is the blended score, one input to that rank rather than the thing it sorts on, so a model further down the rank can carry a higher number. How we source and score.
2021 Tacoma SR5 Trail package tire questions
Not at stock height. On the 2021 SR5 Trail package's factory wheel, the 33-class size in our candidate set that needs the least work is 285/75R16 at 32.8 in. Our two sources disagree here, so this page publishes the stricter one: our per-size table alone would rate it for 2-3 in lift, but its 32.8 in is past the modeled 3rd gen Tacoma ceilings below a 4-6 in lift. Plan for a 4-6 in lift, and treat both sources as modeled estimates rather than installs we measured.
Our data lists the 2021 SR5 Trail package on 16-in dark gray alloy — a 16-inch wheel. Across the whole 2021 range we cover 16-inch, 17-inch, and 18-inch wheels, so wheel diameter is one of the things that changes between trims. Keeping the factory diameter keeps the sidewall the truck was tuned for, and it keeps the tire choices in our size data open to you.
On a 2021 SR5 Trail package, P265/70R16 works out to 30.6 in of overall diameter and 10.4 in of section width, on a 16-inch wheel with a 7.3 in sidewall. The math is the standard one: 265 mm of width at a 70 percent ratio gives the sidewall, and diameter is the 16-inch rim plus twice that sidewall. At that size the tire turns about 659 revolutions per mile.
On the 2021 SR5 Trail package's factory wheel, 265/75R16 is the nearest step up in our candidate set at 31.6 in — a small 16-inch step up that keeps width close to stock. Our rules rate its fitment risk low from stock height on factory offset, and it clears at stock height with no clearance work, inside the modeled ceiling of 31.6 in. Confirm the mounted dimensions and the door-placard load rating before ordering.
On the 2021 SR5 Trail package's factory 16-inch wheel, the tallest size our reconciled fitment rules publish at stock height is 265/75R16 at 31.6 in, with no clearance work. The 3rd gen Tacoma matrix's own stock ceiling, on any wheel, is 265/70R17 (~31.6 in). A leveling kit does not change the answer on this wheel diameter: no taller 16-inch size in our set clears until a bigger lift. These are modeled estimates for a midsize pickup on factory-style offset, not measured installs; lower-offset wheels and spacers move every answer toward more work.