Pontiac 5th Gen GTO Wheel & Tire Fitment Guide

Are you looking for the perfect wheel and tire fitment for your 2004-2006 Pontiact GTO? Our Pontiact GTO fitment guide will help you dial in wider wheel and tire sizes for your Holden to increase performance while describing the changes to suspension, alignment, or spacers that your GTO might need. Our fitments offer options to achieve an aggressive stance or performance oriented track setups focused on maximizing tire width and sidewall support. Concave Flow Formed wheels like the ARC-8, EC-7, and SM-10 are popular on modified GTO's while our Forged ARC-8RT, ML-10RT, and VS-5RS offer the ultimate in chassis-specific performance. If you’re looking unlock performance and improve the look of your Pontiact GTO, Apex Wheels are the natural choice.

These Pontiac GTO wheel fitments are effective for both performance-oriented street cars and weekend track warriors. The suspension type, alignment settings, and tire brand/size can be changed accordingly to work for either scenario.

Staggered Setups

Maintains stock-like handling characteristics, tires can only be rotated left to right. Maximizes both front and rear tire width.

Wheels

• Front Wheel Size: 18x8.5" ET40/45
• Rear Wheel Size: 18x9.5" ET58
• • Available in: ARC-8, ARC-8RT, EC-7, ML-10RT, VS-5RS
  • Popular fitment

Tires

• APEX Staff Pick:
• • Front Tire Size: 245/40-18
  • Rear Tire Size: 275/35-18
  • Direct fit
• Wider Alternative:
• • Front Tire Size: 255/40-18
  • Rear Tire Size: 275/35-18
  • Direct fit

Square Setups

Recommended for enthusiasts that want to mitigate understeer and rotate tires front & rear for extended life. Square configurations may compromise rear-end grip when compared to staggered configurations.

Wheels

• Front Wheel Size: 17x9" ET42
• Rear Wheel Size: 17x9" ET42
• • Available in: ARC-8, ARC-8RT, ML-10RT, VS-5RS

Tires

• APEX Staff Pick:
• • Front Tire Size: 245/40-17
  • Rear Tire Size: 245/40-17
  • Direct fit
• Wider Alternative:
• • Front Tire Size: 255/40-17
  • Rear Tire Size: 255/40-17
  • Direct fit in most cases, may need -1.5° negative camber on some cars due to tire/setup variances

Wheels

• Front Wheel Size: 18x8.5" ET35/40/45
• Rear Wheel Size: 18x8.5" ET35/40/45
• • Available in: ARC-8, EC-7, SM-10, ARC-8RT, ML-10RT, VS-5RS
  • All three offset options work, select wheels are only available in one of the three choices. If all are available, ET45 is a factory style fitment whereas ET35 is more flush like a typical aftermarket wheel setup

Tires

• APEX Staff Pick:
• • Front Tire Size: 245/40-18
  • Rear Tire Size: 245/40-18
  • Direct fit

Wheels

• Front Wheel Size: 18x9" ET42
• Rear Wheel Size: 18x9" ET42
• • Available in: ARC-8

Tires

• APEX Staff Pick:
• • Front Tire Size: 255/40-18
  • Rear Tire Size: 255/40-18
  • Direct fit
  • 1/4" front spacer required for CTS-V brakes

Still have questions?

Fill out our Fitment Recommendation form Call us: 925-245-0773 Email us: support@apexraceparts.com