Wheel Offset and Backspacing for 35s on a Wrangler or Tacoma

Last updated on October 25th, 2026 at 06:14 pm

This post contains Amazon affiliate links. As an Amazon Associate I earn from qualifying purchases, at no extra cost to you.

For 35-inch tires on a Wrangler, the most common aftermarket choice is a 17x8.5 or 17x9 wheel with about 4.5 to 4.75 inches of backspacing (roughly +0 to -12 mm offset). Stock Wrangler wheels sit near +44 mm offset with about 6 inches of backspacing, which is why many lift kits require wheels with 4.75 inches or less, or wheel adapters. A 3rd-gen Tacoma is less settled: 35s usually mean wheels near 0 mm offset plus body trimming, and the lift kit maker's wheel spec is the one to follow.

What wheel offset and backspacing mean

Offset is the distance, in millimeters, from the wheel's mounting face (where it touches the hub) to the wheel's centerline. Positive offset tucks the wheel toward the vehicle. Zero offset puts the mounting face on the centerline. Negative offset pushes the wheel outward.

Backspacing is the distance, in inches, from the mounting face to the wheel's inner edge. It shows how much room the wheel needs behind it, which matters for control arms, brake lines, and frame or body parts.

Hub-centric means the wheel's center bore matches the vehicle's hub diameter, so the hub carries the wheel's weight instead of the lug nuts. Both numbers matter, and they change together as width changes. A wider wheel with the same offset pushes both its inner and outer edges farther out.

How to calculate backspacing from width and offset

Want the math done for you? Use the calculator, then read the worked examples below it.

More free tools: see all our off-road calculators for tire size, regear, air-down pressure, winch size and more.

The calculator uses the formula below: backspacing = width / 2 + offset / 25.4 + 0.5. It is an estimate. Your lift kit maker's published number always wins.

Wheel width is measured between the bead seats, and each flange adds about half an inch. That is why the formula carries a 0.5-inch term:

Backspacing (in) = (wheel width ÷ 2) + (offset in mm ÷ 25.4) + 0.5

• 17x8.5 at 0 mm: 4.25 + 0 + 0.5 = 4.75 in. This matches the published spec for the Method Street Series 317 wheel.
• 17x9 at -12 mm: 4.5 - 0.47 + 0.5 = about 4.53 in.
• Stock-style 17x7.5 at +44.45 mm: 3.75 + 1.75 + 0.5 = 6.0 in.
• 17x7.5 at +30 mm (a Tacoma-style wheel): 3.75 + 1.18 + 0.5 = about 5.43 in.

To go the other way, offset in mm = (backspacing - width ÷ 2 - 0.5) × 25.4. Always measure a real wheel if you can, because published backspacing is sometimes rounded.

Stock and recommended wheel specs for 35s

The table below compiles manufacturer and retailer fitment data. Backspacing in parentheses was calculated with the formula above and is not a published figure. Where sources disagree, treat the lift kit maker's number as the one to follow.

Vehicle	Stock wheel (bolt pattern / hub bore)	Commonly recommended for 35s	Source notes
Wrangler JK (2007-2018)	Often 17x7.5 at about +44 mm (about 6.0 in); 5x127 (5x5); 71.5 mm	17x9 with 4.5 in backspacing is called the most popular 35-inch setup; 17x9 at 0 to -12 mm with a 3-4 in lift	Stock and bolt pattern: Ice Creams Wheels and Tires. Backspacing advice: JK-Forum (owner forum, not a manufacturer). Sizes vary by trim, so check your wheel.
Wrangler JL (2018 and newer)	17x7.5 at about +44 mm (about 6.0 in); 5x127; 71.5 mm (some sources list 71.6 mm)	Aftermarket wheels at 4.75 in backspacing or less, for example 17x8.5 at 0 mm (4.75 in). 2-2.5 in lift is common.	Stock: ThreePiece.us (+44) and Ice Creams Wheels and Tires (+44 to +47). Lift kit: TeraFlex and TeraFlex 3.5-inch kit (4.75 in or less, or TeraFlex adapters for stock wheels). Wheel: Method Street Series 317.
Wrangler JL, alternate view	Same as above	17-inch wheels at +5 to +44 mm; 8x17 at +15 to +40 mm (about 4.9 to 5.9 in for 8x17)	Only ThreePiece.us gives this wider range. It conflicts with TeraFlex's 4.75 in limit. Check your lift kit maker.
Tacoma 3rd gen (2016-2023)	16 in wheels at +25 mm per ThreePiece.us Tacoma page; 17x7.5 TRD wheels are often listed at +30 mm (about 5.4 in); 6x139.7; 106.1 mm	9 in wide wheels at +12, 0 or -18 mm (about 5.5, 5.0, 4.3 in) with a 35x12.50 tire on a 6-inch lift; 18 in or larger wheel required	Lift kit: ReadyLIFT (test fit every combination). Stock offset sources disagree (+25 vs +30), so read the number stamped on your wheel.

A 35-inch tire is not a precise size. A 35x12.50 measures about 35 inches, while a 315/70R17 is closer to 34.4 inches (ThreePiece.us). For how those numbers are written on the sidewall, see our guide to reading mud tire sizes.

Rubbing, track width, and steering stops

Moving a wheel outward with lower backspacing widens the track and gives the tire more clearance from the suspension and frame. The trade-off is that the tire sticks out farther toward the fender edge, and the load on the wheel bearings and steering parts rises as the contact patch moves away from the hub centerline. Where the tire contacts depends on lift height, tire width, and wheel position.

Wrangler JK and JL contact points

• Fender liners and bumper wind deflectors. TeraFlex says plastic-bumper JLs need the bumper-to-fender wind deflectors or splash guards removed for 35s or larger.
• Bump stops. TeraFlex includes 3-inch front and 2.5-inch rear bump stop extensions for Sport and Sahara fenders on its 2.5-inch kit so 35s clear at full compression.
• Full-lock steering. ThreePiece.us advises checking the front lower control arm and the pinch seam behind the fender at full steering lock and full compression.
• Aggressive offsets. Very negative offsets on wide wheels may require body modification, according to ThreePiece.us.

Low backspacing and bigger tires also change how the Jeep feels after a lift. Our guide to problems after a Jeep lift kit covers wander and death wobble.

Tacoma contact points

3rd-gen Tacoma owners commonly report the tire sidewall contacting the cab mount at full lock on 35s, with the fix being a "cab mount chop" plus fender liner trimming. This comes from owner forums rather than Toyota or a lift kit maker, so ask your kit maker what trimming it expects. One thread suggests wheels between -10 and +10 mm give the best chance of avoiding contact, but no manufacturer in this article states that.

Bolt pattern, hub-centric rings, and adapters

• Wrangler JK and JL: 5x127 mm (5x5 inch), 71.5 mm hub. Aftermarket Wrangler wheels with a larger center bore need hub-centric rings.
• Tacoma 3rd gen: 6x139.7 mm (6x5.5 inch), 106.1 mm hub.
• Spacers and adapters: TeraFlex offers adapters for people keeping stock wheels, but stock wheels with adapters should be checked against the kit maker's instructions. Check the wheel load rating too. The Method Street Series 317 is rated at 2,650 lb per wheel.

Larger tires also demand attention to tire strength and pressure. See load range C vs D vs E and our off-road tire pressure guide. If you go to 35s, a gearing change is often needed as well; see what gear ratios mean.

Safety note: After installing wheels, torque the lug nuts to the vehicle's specification (our lug nut torque specs from the owner's manuals list them for the Wrangler, Tacoma and more) and recheck after the first drive. Wheel adapters and spacers add stress to studs and bearings, so use quality parts and follow the manufacturer's torque instructions. Test full steering lock and suspension compression, ideally with a spotter, before driving at speed.

Shopping for Grand Cherokee wheels instead? The Grand Cherokee wheel interchange guide covers bolt patterns, stud threads and torque for each generation.

FAQ

What offset is best for 35-inch tires on a Wrangler?

Most 17-inch aftermarket wheels sold for 35s on a JL are around 0 mm offset with 4.75 inches of backspacing, such as 17x8.5 at 0 mm. Your lift kit's instructions take priority, and TeraFlex specifies 4.75 inches or less for its kits.

Can I run 35s on stock Wrangler wheels?

It depends on the kit. ThreePiece.us says Rubicon models may clear 35s with a small lift, while TeraFlex requires aftermarket wheels at 4.75 inches or less, or its adapters, for stock wheels on its kits.

How much backspacing is too much?

The more backspacing, the closer the tire sits to the frame and suspension. For a JL on a kit with a 4.75-inch limit, stock backspacing of about 6 inches is over by about 1.25 inches.

Do I need a lift for 35s on a Tacoma?

ReadyLIFT specifies 35x12.50 tires on its 6-inch kit. Owners fit them on smaller lifts but report trimming and a cab mount chop. Ask your kit maker.

Sources

• Ice Creams Wheels and Tires: Best Wheels for Jeep Wrangler JK and JL
• ThreePiece.us: Can You Run 35s on a Jeep Wrangler?
• TeraFlex JL 4-door 2.5-inch spacer lift kit
• TeraFlex JL 4-door 3.5-inch coil spring lift kit
• Method Race Wheels Street Series 317 17x8.5 (4.75 in backspacing)
• ReadyLIFT 6-inch Tacoma lift kit (2016-2023)
• ThreePiece.us: 2023 Toyota Tacoma wheel specs
• JK-Forum: offset vs backspacing (owner discussion)