Any Noticeable Performance loss 19 vs 20

[Lee808]

I've been debating for a week on stepping up to a 20inch wheel. They are forged and weight around 22 and 24 pounds. 20x9.5 and 20x11. The problem is that wider tires also weight about 5-6 pounds more each. Will the overall gain in weight be enough impact performance?

Those guys that went from 19 to 20 how is the ride after? Is it more sluggish? I know the ride will get a little worse but I'm mostly concerned about handling and acceleration performance.

If I go 19s, the forged weight savings should equal out to stock weight with the increased width and weight of the tires, so that's a win win in my book. But 20s look so nice...What if i gain a few (6-8 lbs) going up to 20s will performance be drastically affected? Car is not tracked...none here.

Thanks

[THEROK]

Akin to asking will my abs look more defined going from 10% to 8% body fat? Will I or others really notice? Go for looks first and then don't go stupid on quality or fitment 2nd. There are so many solid choices for the F8X, it's hard to mess this up.

If I were in the market today, I'd get the black 20" BBS FI-Rs. Best production wheels made on Earth today.

Mahalo!

[Lee808]

To some the difference matters. FIRs are amazing I agree but I can't justify paying 10K on wheels and tires by any stretch of the imagination. Hats off to the guys that do.

[guess2098]

Originally Posted by Lee808

To some the difference matters. FIRs are amazing I agree but I can't justify paying 10K on wheels and tires by any stretch of the imagination. Hats off to the guys that do.

It's not 10k. Maybe MSRP but like most ppl, no one paid MSRP for their car.

[Lee808]

I was figuring 8500 give or take for wheels plus another 1500 or so for tires.

Did you go up to 20s from 19? If so, did the handling change at all?
Thanks

[guess2098]

Originally Posted by Lee808

I was figuring 8500 give or take for wheels plus another 1500 or so for tires.

Did you go up to 20s from 19? If so, did the handling change at all?
Thanks

Are you planning any tune on your car? 19 with 30 sidewall too much wheel spin, 20 is little better

[Lee808]

Originally Posted by guess2098

Are you planning any tune on your car? 19 with 30 sidewall too much wheel spin, 20 is little better

To answer your question, the car is Tuned. Im confused on your response however. How does side wall height increase or decrease wheel spin???

Perhaps I over asked my question. If you upgraded to 20 inch did you perceive a decrease in handling characteristics?

[FriedPiston]

I'm tuned with over 620 ft/lbs of torque.

I've gone from stock 20" 666M to 18" Apex FL-5 (285/30 square), then 19" Apex ARC-8 (275/35 square), back to 20" 666M, and now on 19" Signature SV107 wheels (275/35; 295/35).

The stock 20" 666M wheels are so heavy that the difference in both unsprung weight and rotational mass were immediately noticeable after every wheel change.

There's no secret to it. With the exception of carbon fiber or extremely lightweight forged wheels, 20" is simply not a performance oriented setup compared to a 19" or 18" wheel diameter.

[Lee808]

Originally Posted by nars3000

I'm tuned with over 620 ft/lbs of torque.

I've gone from stock 20" 666M to 18" Apex FL-5 (285/30 square), then 19" Apex ARC-8 (275/35 square), back to 20" 666M, and now on 19" Signature SV107 wheels (275/35; 295/35).

The stock 20" 666M wheels are so heavy that the difference in both unsprung weight and rotational mass were immediately noticeable after every wheel change.

There's no secret to it. With the exception of carbon fiber or extremely lightweight forged wheels, 20" is simply not a performance oriented setup compared to a 19" or 18" wheel diameter.

This is the type of response I was looking for. I knew it would affect it, just didn't know how much. I don't want to spend 5k on wheels that drastically hurt performance.

The 20 inch wheels are lighter than the 666 wheels but with the added weight of wider tires I'm probably right in the same boat as having stock 666 weight and stock setup.

I haven't Dyno but I'm guessing I'm some where around 500 ft lbs and i want to feel every bit of it lol.

Probably going to stick with 19s after reading how much of a difference you felt. Thanks for your response!

[FriedPiston]

Originally Posted by Lee808

This is the type of response I was looking for. I knew it would affect it, just didn't know how much. I don't want to spend 5k on wheels that drastically hurt performance.

The 20 inch wheels are lighter than the 666 wheels but with the added weight of wider tires I'm probably right in the same boat as having stock 666 weight and stock setup.

I haven't Dyno but I'm guessing I'm some where around 500 ft lbs and i want to feel every bit of it lol.

Probably going to stick with 19s after reading how much of a difference you felt. Thanks for your response!

You're welcome! It's also worth noting that there are way more tire options now for 19"s than when they were first coming around a decade+ ago... Another major benefit with 19"s is you'll have the option to run a 35-series tire profile, which is much more suitable for street driving.

Only get 20"s if you prefer to go for the stance // park hard look with no track duty whatsoever (20" rear GTS wheels excluded).

[Expert@ApexWheels]

Originally Posted by nars3000

You're welcome! It's also worth noting that there are way more tire options now for 19"s than when they were first coming around a decade+ ago... Another major benefit with 19"s is you'll have the option to run a 35-series tire profile, which is much more suitable for street driving.

Only get 20"s if you prefer to go for the stance // park hard look with no track duty whatsoever (20" rear GTS wheels excluded).

Great post and great advice. 19" and 20" setups are generally preferred more for aesthetics, and in those cases, we are willing to trade a bit of ride quality for the look we want.

The difference from 19" to 20" will be felt for sure, more so in terms of ride quality/harshness than performance. It can nearly be equated to the difference between normal summer tires vs. runflats. You'll notice it when you drive them back-to-back, but if you've only ever driven the car with one setup, you wouldn't likely think anything of it.

--Dylan

[Lee808]

Thanks for the insight gents. Roads in Hawaii suck for the most part. I'm coming from the 437s so I'm thinking I should stay at 19s because I'll know what I'm getting into. Swift's made the ride hard enough.

[guess2098]

Originally Posted by Lee808

To answer your question, the car is Tuned. Im confused on your response however. How does side wall height increase or decrease wheel spin???

Perhaps I over asked my question. If you upgraded to 20 inch did you perceive a decrease in handling characteristics?

Overall diam from stock 285/30/20 to smaller 295/30/19 I noticed at lot more wheel spin when I have stage2 bm3 tune. Later I changed from 295/30/19 height 26 inches to 325/25/20 26.3 inches. the gap between wheel and fender is much much smaller. It is not just .15 smaller. Although both PSS tire overall diam are very close, 19 is still a much smaller tire.

I feel 20 has better handling but just daily drive. Ppl who go to track will have better answer

[Lee808]

Thanks for your input. I understand what you are saying now