Toyota 4Runner TRD Pro (2020) Bolt Pattern & Wheel Fitment
Toyota 4Runner TRD Pro (2020): 6x139.7 bolt pattern, 106.1mm center bore. Factory wheels: F/R: 17x7.5J at ET15 offset, front and rear. Reference fitment ranges.
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Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | F/R: 17x7.5J F/R |
| Flush Fitment | 17x8.5J at ET0 offset |
| Maximum Aggressive | 18x9.0J at ET-5 offset |
How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
Because an SUV's center of gravity is already higher than a sedan's, anything added at the corners — including wheel weight — has an outsized effect on handling balance. A forged wheel lets us hit the visual stance owners want without adding the rotational mass a cast wheel of the same strength would carry.
The Toyota 4Runner TRD Pro runs a 6x139.7 bolt pattern, 106.1mm center bore, and a 17x7.5J, front and rear, wheel from the factory. Our Flush Fitment reference is 17x8.5J ET0, which tucks the tire under the fender lip on a stock-height Toyota 4Runner TRD Pro. Our Maximum Aggressive reference is 18x9.0J ET-5 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Toyota 4Runner TRD Pro OE Wheel Specs
The 2020 Toyota 4Runner TRD Pro (Rugged SUV) uses a 6x139.7 bolt pattern with a 106.1mm center bore. Factory wheels are F/R: 17x7.5J F/R.
Why the factory spec works for most owners:
- Supports the vehicle's curb weight and load capacity
- Preserves ground clearance for everyday and light off-road use
- Balances ride comfort with cargo and passenger stability
- Maintains clearance for the factory suspension travel and brake package
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Toyota 4Runner TRD Pro (2020) we drill the 6x139.7 pattern and cut the centre bore to 106.1mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 6,436 vehicles, free to download, CC BY 4.0.
Flush Fitment
For a flush look, F/R 17x8.5J ET0 is a commonly used starting point — clearance must be verified on a stock or mildly lowered Toyota 4Runner TRD Pro.
Maximum Aggressive Fitment
F/R 18x9.0J ET-5 is a more aggressive reference setup. Beyond this, expect rubbing under compression without fender rolling or camber correction.
5-Tier Configuration Options
A Flush Fit (Conservative) 17x8.5J ET0
Recommended setup: 17x8.5J ET0 | Economy impact: Negligible | Best for: Daily commuting, family use
Appearance: 7/10 | Comfort: 9.5/10 | Install difficulty: ★☆☆☆☆
Estimated cost: $450-800 (wheels + tires + install)
B Comfortable Upgrade 17x8.5J ET-1
Recommended setup: 17x8.5J ET-1 | Economy impact: -2 to -4% | Best for: Daily / street
Appearance: 8/10 | Comfort: 9/10 | Install difficulty: ★☆☆☆☆
Estimated cost: $1,950-2,550 (wheels + tires + install)
C Balanced 18x9.0J ET-3
Recommended setup: 18x9.0J ET-3 | Economy impact: -4 to -6% | Best for: Street
Appearance: 8.5/10 | Comfort: 8/10 | Install difficulty: ★★☆☆☆
Estimated cost: $2,600-3,400 (wheels + tires + install)
D Aggressive 18x9.0J ET-4
Recommended setup: 18x9.0J ET-4 | Economy impact: -6 to -9% | Best for: Show / occasional track
Appearance: 9/10 | Comfort: 6.5/10 | Install difficulty: ★★★☆☆
Estimated cost: $3,900-5,000 (wheels + tires + install)
E Max Aggressive 18x9.0J ET-5
Recommended setup: 18x9.0J ET-5 | Economy impact: -8 to -12% | Best for: Show only
Appearance: 9.5/10 | Comfort: 4/10 | Install difficulty: ★★★★☆
Estimated cost: $4,800-6,200+ (wheels + tires + install)
Performance Comparison Matrix
| Metric | Tier A | Tier B | Tier C | Tier D | Tier E |
|---|---|---|---|---|---|
| Wheel Spec | 17x8.5J ET0 | 17x8.5J ET-1 | 18x9.0J ET-3 | 18x9.0J ET-4 | 18x9.0J ET-5 |
| Economy Impact | Negligible | -2 to -4% | -4 to -6% | -6 to -9% | -8 to -12% |
| Appearance | 7/10 | 8/10 | 8.5/10 | 9/10 | 9.5/10 |
| Comfort | 9.5/10 | 9/10 | 8/10 | 6.5/10 | 4/10 |
| Install Difficulty | ★☆☆☆☆ | ★☆☆☆☆ | ★★☆☆☆ | ★★★☆☆ | ★★★★☆ |
| Cost Range | $450-800 | $1,950-2,550 | $2,600-3,400 | $3,900-5,000 | $4,800-6,200+ |
| Best For | Daily commuting, family use | Daily / street | Street | Show / occasional track | Show only |
Real-World Reference Cases
The examples below are compiled from typical ANKUSI customer configurations and are labeled as reference cases, not individually verified real-world builds.
Case 1: Daily Driver (Flush Fit (Conservative))
Profile: Everyday driving, prioritizes comfort and low running cost.
Setup: 17x8.5J ET0
Cost: ~$620
Outcome: Minimal visual change, ride and fuel economy essentially unaffected.
Case 2: Balanced Enthusiast (Balanced)
Profile: Wants a sportier stance without sacrificing daily usability.
Setup: 18x9.0J ET-3
Cost: ~$3,000
Outcome: Noticeable visual upgrade, fuel economy drop within the expected range.
Case 3: Show Build (Max Aggressive)
Profile: Built primarily for shows or occasional track/show use.
Setup: 18x9.0J ET-5
Cost: ~$5,500
Outcome: Maximum visual impact; daily comfort and fuel economy are heavily compromised, physical test fit required before production.
Decision Guide
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: F/R: 17x7.5J ET15 → ~4.84″ backspacing
- Flush: 17x8.5J ET0 → ~4.75″ backspacing
- Max: 18x9.0J ET-5 → ~4.8″ backspacing
A Note on Clearance
Final clearance depends on the exact tire model, suspension height, brake package, alignment and vehicle tolerances. A physical test fit is recommended before production.
Want to check a different width or offset before you order? Use our Offset & Backspacing Calculator to solve the numbers yourself, or looking for your exact Toyota spec, or want a wheel built to a custom offset for your Toyota 4Runner TRD Pro? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Custom Forged Wheels for the Toyota 4Runner TRD Pro (2020)
Everything above is reference data. If you want wheels actually built to it, that is what ANKUSI does: we are a forged wheel factory in Guangzhou, China, IATF 16949 and ISO 9001 certified, forging on our own 10,000-ton press and producing over 120,000 wheels a year. Forging blank, CNC machining, finishing, coating and inspection all happen in the same building — nothing is subcontracted and nothing is relabelled from another manufacturer.
Every set is cut to order, so the 6x139.7 pattern and the 106.1mm centre bore are machined for this car specifically rather than shimmed with adaptor rings. Diameter, width, offset, concavity, monoblock or multi-piece construction and the finish are all yours to choose — most Toyota orders on this platform land somewhere between the 17x8.5J ET0 flush setup and the 18x9.0J ET-5 aggressive setup referenced above.
Designs we already tool for the 6x139.7 pattern — each one is re-cut to your sizes and offsets:
Rays Volk Racing TE37 Matte Gunmetal 6-Spoke Off-Road Forged Wheels – Toyota Land Cruiser / Toyota 4Runner Fitment (6-Lug)
Rays Volk Racing TE37 Matte Bronze 6-Spoke Forged Wheels – Toyota Land Cruiser / Toyota 4Runner Fitment (6-Lug)
Gloss Black 10-Spoke Forged Wheels – Toyota Land Cruiser / Toyota 4Runner Fitment (6-Lug)
Matte Black 6 Y-Spoke Off-Road Forged Wheels – Toyota Land Cruiser / Toyota 4Runner Fitment (6-Lug)Frequently Asked Questions
What bolt pattern (PCD) does the Toyota 4Runner TRD Pro use?
How many lug bolts does the Toyota 4Runner TRD Pro use?
What is the center bore size on the Toyota 4Runner TRD Pro?
What size are the factory (stock) wheels on the Toyota 4Runner TRD Pro?
What is the biggest wheel size I can fit on my Toyota 4Runner TRD Pro without rubbing?
What does a flush wheel fitment look like on the Toyota 4Runner TRD Pro?
Do I need wheel spacers for my Toyota 4Runner TRD Pro?
How do I calculate wheel backspacing for my Toyota 4Runner TRD Pro?
What's the difference between wheel offset and backspacing?
Can I run staggered wheels (different sizes front and rear) on my Toyota 4Runner TRD Pro?
Wheel Installation Reference: Torque, Thread & TPMS
Thread & Fastener: M12x1.5, conical-seat lug nut.
Factory Torque Spec: 103-110 Nm (76-81 ft-lb). Range covers most Toyota passenger cars, crossovers, and light trucks on M12x1.5 studs.
TPMS: TPMS (Tire Pressure Monitoring System) has been federally mandated on all new light vehicles sold in the US since the 2008 model year. If your wheels use OE-style sensors, have them transferred or cloned to the new wheels at installation.
Tire Pressure: Always set tire pressure to the value on your vehicle's tire placard (driver's doorjamb or glovebox), not the max PSI printed on the tire sidewall — this is trim- and tire-size-specific and stays the same reference point when you switch to a different wheel and tire combination.
Reference data compiled from published OEM service specifications and cross-checked against independent repair sources; always confirm against your owner's manual or door-jamb placard before installation.