Hi guys,
Im looking to downsize to 18in. To all the wheel and offset experts out there; what offsets should i be looking at? What are conservative/aggressive offsets? Thanks in advance!

 

Truthfully, I don't think it will waver much from the 19s. I was looking at a set of 18s for the track and autocross events, and conservatively offsets of 38-45 (front) and 45-55 (rear) will be just fine. For a more aggressive approach- again, similar to the 19s- maybe 22-32 (front) and 30-35 (rear) will work, but will most likely need camber and/or skinny tires. There are some who have 18s on the forums, and personally I think it looks good. How it performs will be determined by what you're looking for in terms of sizing for both wheels and tires. In fact, if you're at stock height and if you're leaning towards a more conservative set up without camber or doing other things to make the wheels fit, you can run some wide tires up front. I believe some members have a square set up of 285/40/18 with 18x8.5 +38.

 

Listen to Brian" bnizzle87" he is right. Now if u want Tom's front lip u let me know lolz. I have Wald front is coming soon

 

Really? I just bought a wald lip from LOLM3 the other day, I guess we can be twins now

 

U meant the silver one ? or the one came unpainted ? lolz , we cant be twin lolz your F is white pearl :P

 

I have been very seriously looking into a cheap track set of wheels and tires. Can you really mount a 285 in the front ?! I was thinking of buying some cheap Enkeis used and mounting up some Hoosiers or even a set of the Michelin Pilot Sport Cup 2.

I just dont understand members flaming people for asking questions. Who cares if there are multiple threads. It will be ok......we will make it ......

 

Here's my 18" setup (rim sizes) I'll be ordering soon. Tires will be around front 255/35r18 hankook ventus Evo v12, rear 275/45r18 gforce kdw.

 

Or if go with a set of enkei pkr 18x8.5 +24 and 18x9.5+25

 

Im looking at Enkei rpf1 18" but not sure which offsets will be best. I dont want to be too conservative or too aggressive either. My car is lowered on kw v3.

Again, thanks for sharing.

 

I found it hard to believe that 285s could be squeezed in the front wheel wells when I was researching tire and wheel sizes for the track, but it indeed can be done with stock ride height. I know the few that have experimented with sizing are running the 285/35/18 all around.

 

The wheel design looks great, but the offsets will put you in a little trouble. Both are extremely aggressive for what the IS F can handle without running camber, increasing ride height, and running spacers. I know a lot of people who want aggressive offsets on our cars, and it's highly unlikely unable to be done without spacers for sure.

 

I'm not sure if you've seen this yet, from the drag setup thread, but it might help as far as determining size and offset:

https://www.clublexus.com/forums/is-...ml#post8688350

These particular wheels look pretty good as well.