33 vs 35 Inch Tires on a Tacoma

What is the real difference between 33s and 35s on a Tacoma?

On 17-inch wheels the common true 33 is a 285/70R17 (about 32.7 in tall) and the common true 35 is a 315/70R17, which most brands market as a 35x12.50R17 even though it measures about 34.4 in. So the jump from a 33 to a 35 is only about 1.7 inches of diameter - but that inch and change lands almost entirely at the top and outside of the tire, which is exactly where a midsize truck runs out of room. It is also where weight, gearing, and clearance demands climb fast.

What does it actually take to fit 35s versus 33s?

This is where the two sizes stop being comparable. A 33 is a tire upgrade; a 35 is a suspension-and-drivetrain project. The table below is the general picture on stock-style wheels - your exact result depends on wheel offset, tire brand, alignment, and how hard you turn while loaded, so always confirm at full lock and full compression.

Do you have to regear for 33s or 35s?

A taller tire acts like numerically lower (taller) gearing - the engine turns fewer times per mile, so it works harder off the line and downshifts more on grades. A 3rd-gen V6 leaves the factory around a 3.909 axle (4.30 on the manual); the 4th-gen 8-speed runs a 3.583 but hides more of the loss with its wider ratio spread. The bigger the tire, the more a regear helps.

• 33s (285/70R17): a regear is optional. Many owners run 33s on stock gears and just accept slightly softer response; 4.56 is a mild fix and 4.88 restores near-stock feel on a 3rd gen.
• 35s (315/70R17): a regear is strongly recommended. 4.88 is the common street-and-trail choice; 5.29 is popular for heavier, loaded, or overland trucks that spend time in low range.
• Regear both axles. On a full-time or part-time 4WD truck you must regear the front and rear together so the ratios match - doing only one is not an option.
• Budget roughly $2,500-4,000 installed for a quality front-and-rear regear with new bearings and a shop install.

How do 35s affect weight, braking, and CV angles?

The costs of a 35 are not just the tire and the lift - they show up every time you accelerate, stop, and turn. A 315/70R17 is commonly 12-18 lb heavier per corner than a 285/70R17, and that extra mass is both unsprung and rotating, which is the worst kind for a chassis to carry.

• Braking: the stock brakes now have to stop more rotating mass on a taller lever arm. Expect longer stopping distances and faster pad and rotor wear, especially loaded or towing.
• Acceleration and MPG: heavier, taller tires blunt throttle response and usually cost fuel economy - a regear recovers the feel but not all of the mileage.
• CV and driveline angles: the tall lift that a 35 needs steepens the front CV-axle angles on the Tacoma's independent front suspension, adding boot and joint wear; aftermarket upper control arms and diff drops help but do not eliminate it.
• Steering and bearings: a wider, heavier tire adds load to tie rods, ball joints, and wheel bearings, and a lower offset to clear it multiplies that load through a longer scrub radius.

None of this makes 35s a bad choice for a dedicated off-road build - it just means a 35 is a system decision. If you fit 35s without addressing gearing, brakes, and front geometry, the truck will feel slower and wear parts faster, and the extra ~0.85 in of clearance will not feel worth it.

When are 33s the smarter stopping point?

For a truck that daily drives, commutes, and does moderate to serious trails, 33s hit a sweet spot the 35 struggles to justify. You get a genuine off-road tire and stance, keep most of the factory drivability, and avoid the expensive part of the build - the 4-6 in lift, the welded cab-mount chop, and the mandatory regear.

• You want a bolt-on or near-bolt-on result without cutting structural mounts (especially on a 3rd gen).
• You would rather spend your budget on tires, armor, and recovery gear than on a lift and a regear.
• You care about keeping brakes, CV angles, and fuel economy close to stock.
• You do not need the last inch of clearance - 33s already clear most trail obstacles a midsize truck should attempt.

Choose 35s when the build is genuinely about capability - big obstacles, deep articulation, larger diameter for airing down - and you are prepared to lift, regear, trim, and maintain steeper front angles. On a 4th gen the 35 is meaningfully easier than on a 3rd gen, but it is still a full build, not a tire swap.

Which should you pick?

• Pick 33s (285/70R17) if you want an off-road tire on a daily-driven truck, minimal or no lift, no regear, and no welded metalwork - the best value for the vast majority of Tacomas.
• Pick 35s (315/70R17) if you are building a dedicated trail or overland rig and are ready for a 4-6 in lift, a 4.88 or 5.29 regear, crash-plate or cab-mount trimming, and heavier braking and CV loads.
• On a 4th gen, 35s are easier - a ~2.5-3 in lift, reversible crash-plate removal, and no cab-mount chop - but still expect a regear and the drivetrain trade-offs.
• If you are undecided, start at 33s. You can always step up later, and most owners find 33s deliver the look and capability they actually wanted.