Ben is well known throughout the Subaru community for many reasons. The first is probably the fact that he had an Awesome GD Subaru Impreza WRX STi that he was not afraid to take to the track. He sold that wonderful track ready STi and took a detour from Subaru, but like every smart person he came back.
With the help of a close friend of mine on the opposite side of the United States, we decided it was time to write a simple and detailed how to for this mysterious process.
Here’s the step by step on how to properly modify the rear fenders on a 2005 to 2007 GD Subaru Impreza WRX STi:
Recently I was flipping through the latest Hyper Rev Impreza #6 (thanks John @ GarageSpec), and I found something the community needs to know.
I stumbled upon the release of an 08 STi specific Volk Racing RE30 size.
In case you’re unfamiliar with the Wheel here’s a little photo.

In stock form the Subaru Impreza WRX STi is no slouch in the suspension department. This doesn’t mean it can’t be better, but how far do you go?
Lowering springs that limit the performance and wheel/tire selection or kidney bruising coilovers?
There is a proper middle ground to setting up an STi that is still competitive at the Autox.
Karlton has found that middle ground, the middle ground also happens to include a few sets of 9.5″ wheels!!

Karlton bought this STi in November of 2005, and after about 500 miles and its first oil change, Karlton took it to its first autocross.
Karlton planned on not modifying this car at all and just running it for fun in A Stock. (We all know how this story pans out)
Hey guys,Recently there has been a bit of a stir of what Work Emotions will and will not clear the Brembo brakes found standard on the Subaru Impreza WRX STi. As we all know the Brembos can be a bit challenging finding a wheel that fits without spacers or other modifications.
Quickly I want to Thank the guys over at RavSpec Online who were kind enough to Sponsor this article.
Here is a list of Work Emotion Wheels that are known to clear brembos from independent sources and from Work themselves, lets get started.
Want to run an aggressive GTR Face setup on your Impreza?
It isn’t impossible, you just need to be willing to do the modifications necessary to make it work.
Perfect example of someone willing to do what it takes is Bill (Aka. IStoSTi, CarbonIS, and a few others I don’t know).
Bill contacted me asking “what would it take for me to run this?”
I informed Bill of what he would have to do. Generally when I reply to questions like these people run away or ask if I’m serious, not Bill. Bill asked for more details. Crazy guy I tell ya.
This setup he was talking about was an 18×9 +29mm Advan RS with the coveted GTR face.
Want to run wider tires on your 2005+ Impreza WRX STi that is still using Stock wheels and Stock (or stock replacement) Struts?
Using the following setup it is possible to easily run a 245/40/17 or 255/40/17 Tire
1.) Stock 17×8 +53mm wheels (BBS or Enkei)
2.) Stock Struts (or stock replacements, such as Ohlins)
I received a Private Message last night on one of the many forums I frequent and it is a common one. I’ve cropped down the users original question and cleaned up the answer a little.
Quote:
| Originally Posted by p********g
whats up man, im due for new tires and im kind of torn whether or not to go big for the “hey look at all my rubber” look or just to stick with what works. im running advan rcII’s 18×8.5 +45mm currently with 235/40 18′s. i have been thinking recently of upgrading to some 265/35 18′s and rolling the front and rear fender, but would first like to hear the pros and cons of each tire if possible. i dont do any track driving or autocross, but do hit up some canyon days here and there, but would mainly like the bigger tire for simply “the look” get back to me whenever you can at your earliest convenience, and be as candid as possible, thanks in advance |

Running an Aggressive fitment on an STi isn’t easy but at the same time it isn’t impossible. For autox, track, show, street it is possible to find a wheel and tire combo that will meet the needs you’re looking for.
To run a 9.5″ wheel on an Subaru Impreza WRX STi GDB/F you’ll need the following