Modular multipiece forged ones are not that far off cast ones weight wise. Luckily they also often cost less then single piece forged wheels (don't know if the case with mentioned ones). But given little difference from cast price&weight wise i'd rather get good cast wheel, eg. RPF1 (IIRC 13.7lbs), and call it a day, if price is an issue.

Seems like spending $3K on other things than super lightweight wheels can net more bang for the buck.
Changing final drive, header and tune for about $2k and spend the other $1k on lightweight but not super lightweight wheels.
But I guess if you got money burning a hole in your pocket to gain bragging rights for an uncommon lightweight wheel setup...:iono:

Hell - I'd pry the wallet open and for an extra 6 bucks, get 16x8...much better size for anything 225 or larger...

You might be surprised. Sure final drive will make a difference, and it is something I'm probably going to do, but wheel and tire weight is a big deal, and reducing it as much as possible makes the car feel lighter and if they are good forged wheels they will last forever.

I have a Yaris with 14x5.5 Volk CE28n's that weight 6.5 lbs each, and that really changed the character of the car while also taking a beating through the grind of daily driving for almost a decade and 70,000 + miles.

I've zero interest in a header because you need to go catless to get good gains, and at some point they will start cracking down on that and I have no interest to be the first to get into trouble. And a tune will only do so much.

Yea but look at the weight of the tires. They can vary by as much as 5 lbs a tire for that wide. If I wanted autocross tires I would stay with a 17.

I guess you didn't read this..

http://www.ft86club.com/forums/showp...7&postcount=12

And I'm not sure what your point really is...are you saying 16" tires have variations in weight between brands, but 17" tires don't? I autocross and track on 225/50-16, and I wouldn't go back to 17s now for any reason, at least if I stay at a 225 width. If I wanted to move to 245/255, well that'd be another story, but only because you can't find good 16" rubber in those sizes any more. 225 has PLENTY of options.

Better to invest on tires and a cheaper set of wheels of same size. At least on the 86/BRZ Gazoo races, tires make the difference. Not wheels!

Another thing you need to consider... With this wheel size (16x7) you'll need to fit a 205/55 tire which has a very big sidewall. This will give you a high flex (try to do a slalom) and the only way to solve it is to use a tire with very strong sidewalls. Usually, a tire on the track or UHF category. On stock suspension such tire will provide much body roll and you'll need to change also the suspension.

Actually, taller sidewalls and wider tires on a narrower rim will better tolerate long travel and more camber change associated with stock suspension than a lower profile tire on a wide rim..

nikitopo: Why one needs 205 on 16x7 (as wide as stock 17")? You are not mistakening 16x7 of this thread with OE 16x6.5 by chance? 16x7 should be fine with 195-(205-215 optimal)-225.

Yes, there are more options for tire width. It is just that 205/55 is a more common size and you have more tire choices. As you said, 205-215 is optimal and there aren't too many options for 215/50 or 215/55. At least not on high performance tires.

The set I saw on Craigslist was 16x6.5. Not ideal, but 5 rims for $1500 that were 5x100 was interesting...


10.62 is crazy light!

I did. I'm not autocrossing or racing at all. They are just too far away for me. I'm looking at 195 or 205 tires at the absolute widest. Hell if I could find a 15" wheel that was lightweight I would go for it, those tires would be even lighter.

More importantly, I don't care about ultimate grip. The stock tires are far gripper than I can use on the street., and I like sliding around when I can. Slipping and sliding is more entertaining too me.

There's probably 3 times the selection in 205/55 as there is in 225/50.. Regardless, you're not going to get a tire that fits this car much less than 20 pounds, so that value has a fixed threshold at some point very close.