DENZA Z9 GT Wheel Fitment Guide

DENZA Z9 GT Fitment at a Glance

Factory Wheel and Tire Specifications

MAKSTTON recorded both 20-inch and 21-inch factory wheel configurations. The 20-inch setup uses the same wheel dimensions front and rear, while the 21-inch performance package is staggered.

Factory wheel and tire data recorded by MAKSTTON. The inspected 20-inch setup uses the same wheel and tire specifications front and rear.

Bolt Pattern and Center Bore

Hub-pilot readings taken directly from an inspected vehicle by MAKSTTON

The measured values are the recorded readings from that vehicle. Small differences may occur between vehicles, measuring positions and measuring conditions.

DENZA Z9 GT Wheel Bolt and Lug Nut Specifications

Factory Wheel Load Markings by Model Year

Measured Factory Fender Clearance

Baseline: factory 21×9J ET45 front / 21×9.5J ET50 rear package at factory suspension height, measured from the fender lip to the outer wheel rim.

Use this guide as a baseline, not the final answer. Measurements from your own vehicle are always more valuable. Read our Flush Fitment Guide, measure your car, and calculate the fitment that matches the stance you want.

Brake and Spoke-Clearance Reference

The final 20- and 21-inch wheel and tire specifications are consolidated at the end of this guide. The following notes and wheel designs explain the brake-clearance requirements that must be considered before production.

The factory brake package uses approximately 368×33mm front discs and 358×26mm rear discs. On the 2024 vehicle, the factory front caliper's critical clearance area sits relatively close to the wheel center, while the caliper body is also very thick axially. The wheel spokes must therefore remain farther outward, leaving little room for a visibly concave wheel face with the factory caliper.

2024 DENZA Z9 GT factory front brake assembly photographed by MAKSTTON

If a deeper concave wheel design is required, consider replacing the factory unit with a more compact aftermarket caliper. The wheel must then be designed around the actual replacement-caliper envelope, with spoke-back clearance verified before production.

MAKSTTON Custom Fitment Recommendation

Based on the factory suspension height.

5mm Wheel-Rim Inset from the Fender

20-inch 8.5J

20-inch 9J / 9.5J

21-inch 9J / 9.5J

Fender clearance may vary slightly between vehicles due to production tolerances. Use these figures as a reference only.

Recommended Makstton Wheel Designs

These made-to-order forged wheels can be produced in the recommended diameter, width, offset, 5×120 PCD, 64.05mm center bore, required load rating and selected finish. Final brake clearance is reviewed for the vehicle and order.

FG BO04

View Wheel Details →

FG MR6

View Wheel Details →

FG MR5

View Wheel Details →

FG FK08

View Wheel Details →

FG RE03

View Wheel Details →

FG ZO ST5

View Wheel Details →

Documented 20-Inch Wide Fitment

For owners who want to increase both tire width and wheel width, the following contributor-supplied setup has been used in practice on the DENZA Z9 GT. It is included as a wider alternative to the factory 20-inch configuration.

Fitment data provided by R.U.K.I

This setup uses wider wheels at both axles with matching 275/45R20 tires on all four corners, providing a documented option for customers who prefer a wider 20-inch wheel-and-tire package.

Real-World Fitment 01: DENZA Z9 GT — FG BO04

View More Fitment Photos & Installation Details →

Real-World Fitment 02: DENZA Z9 GT — FG FK08

View More Fitment Photos & Installation Details →

Real-World Fitment 03: DENZA Z9 GT — FG MR5 and FG MR6

View More Fitment Photos & Installation Details →

This latest-model DENZA Z9 GT was originally equipped with the factory 20-inch square setup: 20×8.5J ET45 with 255/45R20 tires at both axles. It is included as a current-model reference; no material change was identified in the chassis and wheel-mounting data relevant to the fitment calculations used in this guide.

The fitted 255/40R21 tires provide limited rim-edge protection on the 9.5J front and especially the 10J rear wheel. To improve protection while keeping tire width at or below 275mm, MAKSTTON suggests 265/40R21 at the front and 275/40R21 at the rear. Compared with the original 255/45R20 tire, the calculated overall-diameter increase is approximately 1.1% at the front and 2.2% at the rear; confirm the selected tire model's approved rim-width range and final dynamic clearance.

MAKSTTON Vehicle Measurement Record

This original MAKSTTON workshop data-collection sheet from the inspected latest-model 2026 DENZA Z9 GT is included for reference. The relevant chassis and wheel-mounting geometry remains consistent with the recorded 2024 vehicle. For mainstream vehicles, MAKSTTON may review and summarize measurements from multiple vehicle records rather than rely on a single sheet.

Original vehicle measurement record completed by MAKSTTON

DENZA Z9 GT Wheel Fitment FAQ