Subaru STI Flush Wheel Setup in Adelaide

A Subaru WRX STI came into Autosport Tyre World for a wheel and tyre upgrade focused on achieving a clean flush fitment.

Rather than going extreme, this setup was designed to sit just right — aligned with the guard, without excessive poke or tuck.

The Key Detail – Wheel Specification

Wheels: Rays Gram Lights 57CR

Size: 18x9.5 +38
PCD: 5x114.3

Browse 57CR:
https://autostw.com.au/search?type=product&q=57CR

Why 18x9.5 +38 Creates a Flush Look

This is the critical part of the setup.

On STI, the combination of:

• 9.5 inch width
• +38 offset

allows the wheel to:

• sit close to the guard line
• fill out the wheel arch properly
• avoid excessive inward tuck

👉 The result is a balanced flush stance that looks intentional, not forced.

Matching Tyre Setup

Tyres: Michelin Pilot Sport 5

Size: 245/40R18

Shop PS5:
https://autostw.com.au/products/245-40r18-97y-xl-michelin-pilot-sport-5?_pos=2&_sid=5e43c34fa&_ss=r

Why 245 Works for This Setup

A 245 tyre on a 9.5 wheel gives:

• slight stretch for cleaner sidewall profile
• sharper visual edge
• better clearance under load

This helps maintain the flush look without rubbing issues.

Flush vs Aggressive Fitment

There is a difference between:

Flush fitment
and
Aggressive stance

This setup focuses on:

• alignment with guard
• clean visual line
• practical daily usability

Rather than:

• excessive poke
• extreme tyre stretch
• compromised drivability

Real-World Result

With this setup, the STI achieves:

• a more planted appearance
• improved wheel presence
• clean and proportional stance

Without sacrificing:

• comfort
• drivability
• tyre wear

Why 57CR Works Well for Flush Builds

Rays Gram Lights 57CR has a simple and functional design.

It complements flush setups by:

• highlighting wheel depth
• keeping the design clean
• avoiding overly complex visuals

Fitment Still Matters

Even with flush setups, correct fitment is essential.

Key considerations include:

• suspension height
• alignment
• tyre choice
• driving conditions

A flush setup should still drive properly.

Where to Achieve Flush Fitment in Adelaide

Getting flush fitment right requires:

• correct wheel specs
• proper tyre pairing
• real-world experience

Autosport Tyre World provides complete wheel and tyre fitment solutions tailored to each vehicle.

Final Setup Summary

Vehicle: Subaru WRX STI
Wheels: Rays 57CR
Size: 18x9.5 +38 5x114.3

Tyres: Michelin PS5
Size: 245/40R18

This setup delivers a clean, balanced flush look with practical daily usability.

FAQ

What offset gives flush fitment on STI?

+38 is a commonly used offset for achieving a clean flush look.

Is 18x9.5 good for STI?

Yes, it provides a wider stance and improved visual presence.

Can 245 tyres fit 9.5 wheels?

Yes, it creates a slightly stretched and clean fitment.

Will this setup rub?

With correct setup, it generally avoids rubbing in normal driving.

What is flush fitment?

When the wheel sits aligned with the guard without sticking out excessively.

Is flush fitment good for daily driving?

Yes, if done correctly with proper sizing and offset.

Where to Buy Rays Rims in Adelaide

Where to Buy Michelin PS5 in Adelaide

Magill:

TYREPLUS Magill | Autosport Tyre World Magill

647 Magill Road, Magill SA 5072
Phone: 0452 641 023