Scott.T

iTrader: (2)

Will an 8x18 ET30 using 235's fit a Hawk STi.
Been offered a set at a good price and want something that will fit flusher with the arches then the usual ET53.
23mm more offset sounds a bit much though.

Any help or pics appreciated.....

Silver Scooby Sport

iTrader: (15)

Hi Scott how are you there buddy been a while
We seem to be running similar cars again, I've got a MY05 blob with the wide rear track and I'm also looking into alloys and tyre size for the spring, I've been advised to go 235 by a few people on an 18x8 but as yet I'm not familiar what offset is required. We are on another new learning curve

Scott.T

iTrader: (2)

Hi mate, LOL good to here from you and very strange we are looking at the same things once again, so many years down the line.

I would like to go 235, as per the RB320. I have found/heard this can be OK on an 8.5x18 ET44, but not sure about an 8x18 ET30.

Silver Scooby Sport

iTrader: (15)

Hey Scott ! Lol for sure.... Brembo's as standard this time eh yes we are looking at the same question again because I'm leaning towards http://www.revolutionwheels.com/millenium/ which are 18x8 and will a 235 suit ? I have also been considering Speedline Turini's but I'd need to buy second hand and refurb to my colour and there are some good Rota designs out there. Like you I imagine with the classic I knew where I was but here we go again on a new learning curve

Scott.T

iTrader: (2)

If I were buying new at full price it would be Rota Force 8.5x18 ET44, but am on the look out for 2nd hand to save some pennies.
I have been offered at a good price some new Inovite ST16 (similar to Rota Grid), but only available in an ET30 on the 8x18. They do a ET35 IIRC but these are multi-fit/multi drilled which personally I hate and will do my best to avoid.

Silver Scooby Sport

iTrader: (15)

We are looking at nearly the same things again Scott



I had not realised they are avainable in an 8.5 diameter that's answered a question for me and I agree about the multi holes because I have always liked the shape of the Rota P1 but like you say it's full of holes and I don't like that myself.

The offset and tyre size 225/235 plus wheel width is taking a little getting my head around, it's going to drop back to wheel design I think to guide.

Scott.T

iTrader: (2)

Just had a bit of a measure up with a bit of wood and spirit level and on the fronts to get the wheel flush with the arch there's 18mm to the wheel face and 15mm to the wheel lip (where the weights clip on to the OE alloy).

On the rears there is a bit more clearance, some of which is due to the plastic arch extensions. 28mm to the wheel face and 25mm to the wheel lip (where the weights clip on to the OE alloy).

So offset wise, without going ridiculouse with stretched tyres and aggressive camber, I reckon the min offset you can go on an 8 inch rim is about 38 (OE ET53 - 15mm).
If you want a staggered look you could go for a ET28 rear.

This is all based on an 8 inch rim, using the 17x8 ET53 OE STi (2006) wheel as a guide.

If you go for a different width, then use the offset calculator to work out the front face position when compared to OE : http://www.1010tires.com/wheeloffsetcalculator.asp

For example the 8.5x18 ET44 of a Rota force pushes the face out 15mm

Neil..

iTrader: (35)

I have put 8.5" x 18 et 35 on a hawkeye WRX (non wide track) without issues.

I would say it is easily do-able depending on your ride height, and the factory geometry accuracy, especially at the rear. (The OEM settings can be a bit far from even side to side, so you may require camber bolts to get accurate readings and to eliminate any chances of rubbing)

HTH, Neil.