OEM Wheel Sizes & Specs: 2025+ (6th Gen) Toyota 4Runner

[Trail4R]

This post will cover factory wheel sizes, lug torque specs, tire sizes, and other wheel-related data for the 6th Gen 4Runner. Whether you're planning a tire upgrade or just need OEM reference specs, this thread has everything in one place. We are still working on detailed specs like offset, backspace, hub bore, and more. We will keep the thread updated as more specs start to come out on dealer lots.

Wheel Sizes by Trim​

Toyota lists multiple wheel sizes for the 6th Gen, depending on trim:

17-Inch (Type B)

• Tire Size: 245/70R17 110T
• Wheel Size: 17 x 7J
• Spare: 17 x 7J
• Torque Spec: 97 ft-lb (131 Nm)

18-Inch (Type A and B)

• Type A:
  • Tire Size: 245/70R18 110H
  • Wheel Size: 18 x 7.5J
• Type B:
  • Tire Size: 265/70R18 116T
  • Wheel Size: 18 x 7.5J
• Spare: 18 x 7.5J
• Torque Spec: 97 ft-lb (131 Nm)

20-Inch (Type A and B)

• Type A:
  • Tire Size: 265/55R20 113V
  • Wheel Size: 20 x 8J
• Type B:
  • Tire Size: 265/55R20 113V
  • Spare: 245/75R17 112S
  • Wheels: 20 x 8J (main), 17 x 7J (spare)
  • Torque Spec (steel wheels): 154 ft-lb (209 Nm)

Tire Pressure Specs​

• All tires: 33 psi (cold)
• Spare (temporary use): Up to 60 psi depending on size

Other Wheel & Tire Specs​

• Bolt Pattern (PCD): Not listed in the Owner’s Manual, but expected to remain 6x139.7 (same as 5th Gen)
• Hub Bore: Not explicitly listed, but likely 106 mm like the 5th Gen
• Offset & Backspacing: Not specified in the Owner’s Manual – must be measured or referenced from wheel manufacturer specs

Lug Nut Torque​

• Most trims: 97 ft-lb
• Steel wheels (Type B spare): 154 ft-lb

What Does The J Mean?​

The “J” in 17 × 7J refers to the wheel bead seat profile—specifically, the shape of the inner lip of the wheel where the tire bead sits.

• 17 = Wheel diameter in inches
• 7 = Wheel width in inches (measured inside the bead seat)
• J = Bead seat design / flange shape
• The letter “J” is the most common flange profile for passenger vehicles and light trucks (including Toyota 4Runners).
• It defines how the inner lip is shaped to hold the tire bead.
• Other letters like “JJ,” “K,” or “H” exist, but “J” is standard for off-road and SUV wheels.

You don’t really need to worry about it unless you’re trying to mount tires on non-standard rims or doing something niche with fitment. For normal off-road builds or tire upgrades, just know that “J” is correct and compatible with typical all-terrain and mud-terrain tires.