What 245/70R17 measures, which Tacoma trims ship it from the factory, and what our fitment model says it takes to run it by generation.
Will it fit
245/70R17 is a factory Toyota Tacoma tire size: our fitment data records it on 7 trim rows across 2024-2026 — SR (2024-2026), SR5 (2024-2026), and SR / SR5 (2025).
At stock height our fitment model clears 245/70R17 on every generation that runs 17-inch wheels: 2nd gen Tacoma (modeled ceiling 30.6 in), 3rd gen Tacoma (modeled ceiling 31.6 in), and 4th gen Tacoma (modeled ceiling 32.7 in).
245/70R17 measures 30.5 in tall and 9.6 in wide, with 6.8 in of sidewall on a 17-inch wheel and about 661 revolutions per mile.
Our per-size candidate table asks for Factory height with no trimming before fitting 245/70R17; the tiers on this page publish whichever of that and the generation ceiling is stricter.
2025 is not proven against a year-specific Toyota document, so the 245/70R17 rows for that year are the common factory pattern rather than a verified trim mapping. Confirm the exact size on the driver's door placard or the tire sidewall before you buy.
Our fitment data holds 7 factory rows on 245/70R17, spanning 2024 to 2026, all of them on the 4th gen Tacoma: SR (2024-2026), SR5 (2024-2026), and SR / SR5 (2025). That is what makes 245/70R17 a replacement question for those trucks rather than an upgrade question.
The wheels under those 245/70R17 rows are 17-in steel, 17-in styled alloy, and 17-in steel or styled alloy, and the tire itself is recorded as all-season. 2 of the 7 rows are package- or configuration-dependent rather than a plain standard fitment, so two trucks wearing the same badge can leave the factory on different tires.
A sourcing caution on 2025: that model year is not proven against a year-specific Toyota document, so the 245/70R17 rows there are the common factory pattern for the year rather than a sourced trim mapping. The 2024 and 2026 rows carrying 245/70R17 are the sourced ones. Confirm the exact size on the driver's door placard or the tire sidewall before you buy.
Will 245/70R17 fit a Tacoma?
245/70R17 is a 17-inch size, so the generations it can go on without new wheels are the ones our size families run on 17-inch rims: 2nd gen Tacoma (2005-2015), 3rd gen Tacoma (2016-2023), and 4th gen Tacoma (2024-2026). Two sources in this repo have an opinion about 245/70R17 on each of them — the per-generation clearance matrix behind our max-tire estimator, and the per-size candidate table behind the recommender — and where they disagree, the stricter of the two is what you read below.
2nd gen Tacoma (2005-2015)
Stock height
Setup
Modeled ceiling
245/70R17
Stock height
265/70R16 (~30.6 in)
Inside the ceiling · published tier
Leveling kit (1-2 in)
265/75R16 (~31.6 in)
Inside the ceiling
3 in suspension lift
285/75R16 (33s, about 32.8 in)
Inside the ceiling
On a 2nd gen Tacoma our matrix models stock height at 265/70R16 (~30.6 in). 245/70R17 measures 30.5 in, 0.1 in shorter than that ceiling, so the modeled read is that it clears with no suspension work and no trimming.
Both sources land in the same place for 245/70R17 on a 2nd gen Tacoma: the candidate table files it as factory-style at Factory height with no trimming — the rule-set's own generation-agnostic description of the size reads "Current SR and SR5 17-inch factory-class size." — and the matrix agrees at stock height. The matrix note at that tier reads: Stock-class sizes only without trimming.
One sourcing caveat for the 2nd gen Tacoma: our per-year fitment rows start at 2017, so nothing in this repo assigns 245/70R17 to a 2005-2015 trim. The 17-inch family we list for that span is a long-running community-documented pattern, not a verified per-year spec, and the ceilings above are the estimator's rule-set for the generation rather than measurements from a 2005-2015 truck.
On a 3rd gen Tacoma our matrix models stock height at 265/70R17 (~31.6 in). 245/70R17 measures 30.5 in, 1.1 in shorter than that ceiling, so the modeled read is that it clears with no suspension work and no trimming.
Both sources land in the same place for 245/70R17 on a 3rd gen Tacoma: the candidate table files it as factory-style at Factory height with no trimming — the rule-set's own description of the size reads "Current SR and SR5 17-inch factory-class size." — and the matrix agrees at stock height. The matrix note at that tier reads: 265/75R16 is the no-rub 'holy grail' on 16s. True 33s do not fit stock.
The 4th gen Tacoma ships 245/70R17 from the factory on SR, SR5, and SR / SR5, so on this generation it is a stock fitment rather than an upgrade. Our matrix puts a stock-height 4th gen Tacoma at 285/70R17 (33s, about 32.7 in), and 245/70R17 at 30.5 in sits inside that ceiling — which is the agreement you would expect from a size Toyota fitted itself.
Both sources land in the same place for 245/70R17 on a 4th gen Tacoma: the candidate table files it as factory-style at Factory height with no trimming — the rule-set's own description of the size reads "Current SR and SR5 17-inch factory-class size." — and the matrix agrees at stock height. The matrix note at that tier reads: The big 4th-gen win: a true 33 (285/70R17) clears at stock height with only the mud flaps off. Taller 33s like 275/70R18 are a leveling-kit size.
Every tier above is modeled output of our own fitment rule-set applied to 245/70R17, not an install anyone here measured: wheel offset, alignment, mud flaps, and the tire model's real moulded width all move where 245/70R17 starts rubbing. Where the two sources behind those tiers disagree, the number you see is the conservative one.
245/70R17 vs the nearest Tacoma sizes
These are the 4 sizes closest to 245/70R17 in overall diameter that also run 17-inch wheels, so every swap in the table is a tire change rather than a wheel change. The set runs from 245/70R17 at 30.5 in to 285/70R17 at 32.7 in, and 265/65R17 and 265/70R17 are factory Tacoma sizes. Speedometer error is calculated against 245/70R17 at 30.5 in — the size the truck would be calibrated for if it wore this page's tire.
That last column is the error you would carry after the swap, before any recalibration: fitting 285/70R17 in place of 245/70R17 puts true speed at 64.3 mph when the speedometer still reads 60. 265/70R17, 275/70R17, and 285/70R17 sit outside the 3 percent window our speedometer calculator treats as the safe band against 245/70R17, so those are recalibration territory. Width moves on its own axis: the widest of them, 285/70R17, is 1.6 in wider than 245/70R17, and section width is what reaches the fender liner and the upper control arm first.
Top-ranked 245/70R17 tires for a Tacoma
Our tire research dataset lists 14 models offered in 245/70R17 — the size that 7 Tacoma factory rows in our data run, recorded as all-season fitments. Below are the 3 best-ranked highway / all-season models offered in it, plus the mild all-terrain Firestone Destination A/T2 for contrast — built for a different job, so it scores on different axes.
Scores are a 0-10 editorial synthesis of published reviews, manufacturer specifications, and retailer fitment data — not tires we tested ourselves. Which models are offered in 245/70R17 is the research dataset's own size catalog, which is why a thinly-catalogued size returns a short list here rather than a padded one. The order above is that dataset's editorial rank; the 0-10 badge is the blended score behind it, so a higher badge on a lower-ranked model is the two measures disagreeing rather than a mistake. How we source and score.
In our fitment model, yes: a 2nd gen Tacoma clears it at stock height (modeled ceiling 30.6 in), a 3rd gen Tacoma clears it at stock height (modeled ceiling 31.6 in), and a 4th gen Tacoma clears it at stock height (modeled ceiling 32.7 in). Both of our fitment sources agree on 245/70R17, which is not true of every size we cover. Both are modeled estimates rather than installs we measured, and lower-offset wheels or spacers can undo any of them.
245/70R17 works out to 30.5 in of overall diameter and 9.6 in of section width, with 6.8 in of sidewall over a 17-inch wheel. The math is the standard one: 245 mm of section width at a 70 percent aspect ratio gives the sidewall, and overall diameter is the 17-inch rim plus twice that sidewall. At that diameter the tire turns about 661 revolutions per mile, and a mounted tire can measure a little off these numbers depending on the model and the rim width it is fitted to.
245/70R17 is 0.1 in shorter and 0.8 in narrower than 265/65R17: 30.5 in against 30.6 in of overall diameter, and 9.6 in against 10.4 in of section width. In revolutions per mile that is 661 against 660, so a speedometer calibrated for 245/70R17 would read 60.1 mph of true speed at an indicated 60 once 265/65R17 was fitted. Both sit on 17-inch wheels, so moving between them is a tire purchase rather than a wheel purchase.
Our fitment data records 245/70R17 on 7 Tacoma trim rows between 2024 and 2026: SR (2024-2026), SR5 (2024-2026), and SR / SR5 (2025). 2025 is not proven against a year-specific Toyota document, so read that year as the common factory pattern rather than a verified trim mapping. Confirm the exact size on the driver's door placard or the tire sidewall before you buy.
