Highway / All-Season
Best for quiet daily, wet roads, long treadlife.
3rd gen Tacoma · 2018
2018 Tacoma SR5 4-cylinder tire size.
The factory tire and wheel package for the 2018 Toyota Tacoma SR5 4-cylinder, with dimensions, upgrade sizes, and what fits without a lift.
This page covers the 2018 SR5 4-cylinder and SR together: they share the same factory tire and wheel package. It is the canonical page for that shared package.
Factory tire size
Our fitment data puts the 2018 Toyota Tacoma SR5 4-cylinder on P245/75R16 tires with 16-in styled steel or alloy wheels — the common factory pattern for this model year rather than a trim mapping we can source. Confirm the exact size on the driver's door placard or the tire sidewall before you buy.
- On the 2018 SR5 4-cylinder, P245/75R16 measures 30.5 in tall and 9.6 in wide, with a 7.2 in sidewall and 662 revolutions per mile.
- The 2018 SR5 4-cylinder is listed as standard or package-dependent on entry 4-cylinder configurations, with the tire recorded as all-season.
- Modeled estimate: a stock-height 3rd gen Tacoma like the 2018 SR5 4-cylinder tops out near 265/70R17 (~31.6 in) on factory offset.
- Common factory pattern — not verified against a year-specific Toyota document.
Stock size and dimensions
all-season on 16-in styled steel or alloy, varies by package
What 245/75R16 measures — diameter, width, sidewall, and the other Tacoma trims that ship it.
- Diameter
- 30.47 in
- Width
- 9.65 in
- Sidewall
- 7.23 in
- Revs / mile
- 662
Sizes for the 2018 Tacoma SR5 4-cylinder follow the common factory pattern for the 3rd gen Tacoma — confirm yours on the door placard or the tire sidewall.
What P245/75R16 measures on a 2018 Tacoma SR5 4-cylinder
P245/75R16 is 245 mm wide at a 75 percent sidewall ratio on a 16-inch wheel. Through standard tire math that is 30.5 in of overall diameter, 9.6 in of section width, a 7.2 in sidewall, and about 662 revolutions per mile — the figures behind the 2018 SR5 4-cylinder's speedometer calibration. That package is standard or package-dependent on entry 4-cylinder configurations, riding 16-in styled steel or alloy wheels.
Note the P prefix on the 2018 SR5 4-cylinder's factory size (P245/75R16): that is a P-metric passenger-rated tire, not an LT light-truck size. The same 245/75R16 in LT form runs a stiffer casing, a higher load rating, and more weight.
Bigger tires on a 2018 Tacoma SR5 4-cylinder
Staying on the factory 16-inch wheel of a 2018 SR5 4-cylinder, 2 sizes in our candidate set clear at stock height with no lift and no trimming, and inside the modeled stock ceiling of 31.6 in: 265/70R16 at 30.6 in and 265/75R16 at 31.6 in. Set against the 2018 SR5 4-cylinder's P245/75R16, the closest of them comes out 0.1 in taller and 0.8 in wider. Common TRD Off-Road and TRD Pro third-gen factory-class size.
Past that, the 16-inch sizes our set offers a 2018 SR5 4-cylinder need suspension or clearance work: 285/75R16 (32.8 in) sits behind a 2-3 in lift setup with minor changes. 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) — 1.7 in taller than the 2018 SR5 4-cylinder's P245/75R16. 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 4-cylinder sits in the 2018 Tacoma lineup
Sorted by factory tire diameter, the 2018 Tacoma trims we cover run from P245/75R16 at 30.5 in (SR and SR5 4-cylinder) up to P265/70R16 at 30.6 in (TRD Off-Road and TRD Pro). The SR5 4-cylinder's P245/75R16 is 1st of the 4 distinct sizes in that spread: 4 trims above it run a taller factory tire and nothing runs shorter.
A caution for 2018: this model year is not proven against a year-specific Toyota document, so read the size above as the common factory pattern for a 2018 SR5 4-cylinder, not a verified trim-level spec. 2017 through 2020 share the same factory tire lineup, and 2018 sits inside that span. The factory package is shared as well — SR5 4-cylinder and SR leave the factory on the same tire and wheel. The door-jamb placard and the sidewall on the truck settle it.
Top-ranked 245/75R16 tires for a 2018 Tacoma SR5 4-cylinder
Our tire dataset scores 17 models available in 245/75R16, the size the 2018 Tacoma SR5 4-cylinder runs from the factory on all-season. Below are the 3 best-ranked highway / all-season 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.
Highway / All-Season
Best for quiet daily, wet roads, long treadlife.
Toyo Open Country H/T II
6.7/10Highway / All-Season
Best for quiet daily, wet roads, long treadlife.
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 245/75R16 for the 2018 SR5 4-cylinder 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.
2018 Tacoma SR5 4-cylinder tire questions
Our two sources disagree here, so this page publishes the conservative one. On the 2018 SR5 4-cylinder's factory wheel the nearest 33-class size in our candidate set is 285/75R16 at 32.8 in, and our per-size rules put it behind a 2-3 in lift setup with minor changes; the generation matrix is looser, putting a stock-height 3rd gen Tacoma at 265/70R17 (~31.6 in). Plan for the leveling kit, and treat both as modeled estimates rather than installs we measured.
Our data lists the 2018 SR5 4-cylinder on 16-in styled steel or alloy — a 16-inch wheel. Across the whole 2018 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 2018 SR5 4-cylinder, P245/75R16 works out to 30.5 in of overall diameter and 9.6 in of section width, on a 16-inch wheel with a 7.2 in sidewall. The math is the standard one: 245 mm of width at a 75 percent ratio gives the sidewall, and diameter is the 16-inch rim plus twice that sidewall. At that size the tire turns about 662 revolutions per mile.
Open the driver's door of the SR5 4-cylinder and read the tire and loading information placard on the door jamb: it carries the original tire size and the cold inflation pressures set for it. Then read the sidewall of the tire actually fitted, since a previous owner may have changed sizes. For 2018 we treat the SR5 4-cylinder mapping as the common factory pattern rather than a sourced trim-level spec, so the placard outranks any table, including this one.