Mmmm...ya, it's that last picture and it looks like it says 40 even. I'm not sure if they're going to work for you. You'll want an offset between
48-52 mm ideally.
This is off I-club and explains a lot about rims and tires:
Here is some general wheel info pulled from our site (
www.tirerack.com) concerning wheels. This should help people truly understand the issues involved with upgrading wheels.
Offset - the most common question
The offset of a wheel is the distance from its hub mounting surface to the centerline of the wheel. The offset can be one of three types.
Zero Offset
The hub mounting surface is even with the centerline of the wheel.
Positive (Subaru Offsets)
The hub mounting surface is toward the front or wheel side of the wheel. Positive offset wheels are generally found newer cars, including your Subaru. The recommended offset of replacement wheels on the WRX (and most modern Subarus) is between 48 and 52 mm for best results without vehicle modification or added stress on axles.
Negative
The hub mounting surface is toward the back or brake side of the wheels centerline. "Deep dish" wheels are typically a negative offset.
If the offset of the wheel is not correct for the car, the handling can be adversely affected. When the width of the wheel changes, the offset usually changes as well. If the offset stays the same while you add width, the additional width would be split evenly between the inside and outside. For most cars, this won't work correctly due to clearances. This is why larger wheels (with greater width) usually have lower offsets - this pushes the wheel more outward.
Performance Benefits of Alloy Wheels
While many people choose alloy wheels for their beauty, there are equally important performance benefits to be derived including...
Reduced Unsprung Weight Compared to Steel Wheels
This is one of the most critical factors affecting a vehicle's road holding ability. Unsprung weight is that portion of a vehicle that is not supported by the suspension (i.e. wheels, tires and brakes) and therefore most susceptible to road shock and cornering forces. By reducing unsprung weight, alloy wheels provide more precise steering input and improved "turning in" characteristics.
Improved Acceleration and Braking
By reducing the weight of the vehicle's rotational mass, alloy wheels provide more responsive acceleration and braking.
Added Rigidity
The added strength of a quality alloy wheel can significantly reduce wheel/tire deflection in cornering. This is particularly critical with an automobile equipped with high performance tires where lateral forces may approach 1.0g.
Increased Brake Cooling
The metals in alloy wheels are excellent conductors of heat - improving heat dissipation from the brakes - reducing risk of brake fade under demanding conditions. Additionally, alloy wheels can be designed to allow more cooling air to flow over the brakes.
Plus Sizing
Plus sizing your wheels and tires is the best way to improve both the performance and appearance of your vehicle. By using a larger diameter wheel with a lower profile tire it's possible to properly maintain the overall diameter of the tire, keeping odometer and speedometer changes negligible. By using a tire with a shorter sidewall, you gain quickness in steering response and better lateral stability. The visual appeal is obvious, most wheels look better than the sidewall of the tire, so the more wheel and less sidewall there is, the better it looks.
Did your friend have those on a Subaru? Do you know what the offset is?.
