Do you feel 20" chrome robs Z's power?
09-18-2006, 04:30 PM
#41
VERTEX Army CEO
iTrader: (17)
Join Date: Sep 2003
Location: SF Bay Area
Posts: 7,408
Likes: 0
Received 0 Likes
on
0 Posts
Okay guys, I'll throw mine in the mix:
IForged Evolutions (Polished): 20x9(F) + 20x10(R) w/ BFG KDW2 255/35(R) + 285/30(R)
Although this might be the last time you'll see it this way since I'm planning on getting Mercury Silver Volk GT-S's in 19's with fatty lips. I'm a sucker for Ladiez that have nice lips
IForged Evolutions (Polished): 20x9(F) + 20x10(R) w/ BFG KDW2 255/35(R) + 285/30(R)
Although this might be the last time you'll see it this way since I'm planning on getting Mercury Silver Volk GT-S's in 19's with fatty lips. I'm a sucker for Ladiez that have nice lips
09-19-2006, 08:55 AM
#43
I didn't have to lower the car at all, and I don't have any problems with the tire pressure gauge. I just drove it to Sedona and back yesterday (2 hours each way) and never had a light come on. I don't think that putting larger wheels will necessarily trigger any difference with the indicator light. The tire pressure guage on my 2005 coupe with stock wheels went off all the time, but on my 2006 roadster with 20's have never gone off once. I'm not sure what causes the difference.
09-30-2006, 03:43 PM
#44
New Member
iTrader: (1)
Join Date: Apr 2006
Location: TeamSoCalZ.com/WestsideZMeet.
Posts: 797
Received 0 Likes
on
0 Posts
Originally Posted by kourosH
maybe you shouldnt go chrome.
+1
theres only a few (and far between) chromes that IMO actually look great on a Z.
And while im on here, is it just me, or does it appear that twenties on a z actually add height to the car in comparison to stock 17s or 18s.
i thought by keeping the tire profile really low that it should pretty much be the same if you go up one inch or two.
Last edited by L33TZOR; 09-30-2006 at 03:47 PM.
10-06-2006, 10:32 PM
#48
Originally Posted by 350ZZack
Correct, The size of the wheel determines the rotational inertia exerted by the wheel. The larger the wheel, the more power it takes to overcome that extra distance from the center of the wheel.
I = 1/2 Mass * Radius ^ 2
The diameter of the wheel has much more impact on the whps of the car than the unsprung mass(although it is still significant)
Zack (knows formula above only applies for solid cylinders)
I = 1/2 Mass * Radius ^ 2
The diameter of the wheel has much more impact on the whps of the car than the unsprung mass(although it is still significant)
Zack (knows formula above only applies for solid cylinders)
10-07-2006, 06:39 PM
#50
Registered User
iTrader: (8)
Join Date: Aug 2005
Location: NY
Posts: 1,505
Likes: 0
Received 0 Likes
on
0 Posts
Heres some kinda small pics of my 20" Iforged Senekas high polish...Much better than getting heavy chrome...Its not as bling bling as chrome but you get the shine without the added weight...20" rims alone are heavy. Adding chrome to it will imasculate your Z. Unless you have FI. Smaller lighter rims will always have the advantage over bigger rims. But damn it 20" look sooo good on a Z...BTW I dropped it with Eibach Prokits...No problem with rubbing the fenders but dont hit a large pothole...yikes..
10-07-2006, 06:53 PM
#51
Registered User
iTrader: (7)
Join Date: Jan 2006
Location: Ohio
Posts: 2,190
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by SnakeBitten
Heres some kinda small pics of my 20" Iforged Senekas high polish...Much better than getting heavy chrome...Its not as bling bling as chrome but you get the shine without the added weight...20" rims alone are heavy. Adding chrome to it will imasculate your Z. Unless you have FI. Smaller lighter rims will always have the advantage over bigger rims. But damn it 20" look sooo good on a Z...BTW I dropped it with Eibach Prokits...No problem with rubbing the fenders but dont hit a large pothole...yikes..
Just my .02
10-08-2006, 01:42 PM
#54
Registered User
iTrader: (8)
Join Date: Aug 2005
Location: NY
Posts: 1,505
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by fatlip20s
if your going for the look go with 20s and if your for speed go for 18 r 19 because 20s will rub off some speed 
deeez the reason it looks so big is because of the dark shadows hiding the lower body of the Z...As you can see in the top pic its nowhere as big looking as the bottom pic cause you can see all the cars dimensions.
10-08-2006, 03:55 PM
#55
Snakebitten is 100% correct. I have 20" chrome wheels on my 06 touring roadster and had stock rims on my 05 coupe base. The difference in speed is minimal. Once you add an intake or performance mods you can't even tell the difference in the wheel weight. I have cams, intake, and exhaust and it moves very quickly. My stereo is significantly heavy (a couple hundred pounds) and it still makes a minimal impact. I'm sure the track times would see a difference, but you can't FEEL the difference nor would you notice it on the street.
10-08-2006, 04:47 PM
#56
There is no difference at all UNLESS you decide to autocross or drift your car. But just normal street driving(racing) wont harm you. Ive had 20;s but now I have 19;s and I cant really tell a difference. I guess its all mental. Just get what makes you happy.
10-08-2006, 05:08 PM
#58
Registered User
Join Date: May 2006
Location: Valencia, CA
Posts: 321
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by RBlover69
bottom line ...20s on a sports car other then looks are never a good thing for performance. I mean its a no brainer.
10-08-2006, 06:56 PM
#59
Registered User
iTrader: (8)
Join Date: Aug 2005
Location: NY
Posts: 1,505
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by RBlover69
bottom line ...20s on a sports car other then looks are never a good thing for performance. I mean its a no brainer.
]...Thats the only time you are going to see the performance hit from 20's...On a track where every tenth counts I would never chose 20's on a Z....But MOST sports cars are run on the street...And those that have 20's will tell you they have no problem keeping up with stock tired Z's...As a matter of fact I'd go so far as to bet that with my 255f/275r 20's on I would beat a stock Z with the 225f/245r 18" tires on a roadcourse. Simple reason, more contact patch so Ill corner harder where the stockers will slide..More grip..Go ahead and call me crazy.
Now I wouldnt make that bet with 18's with comparably wide rubber as mine
...Different variables come into play imho..On the street none of this matters so go with whatever size tire/wheel combo you like best. Most of the guys that tell you not to go 20's because of performance hit have never seen a track and are just parroting what they've heard big rims do to cars[not refering to anyone in particular]...If you listen to them you would think 20's turn the Z into a land barge that cant accelerate or corner...Take it from those of us enthusiasts that drive on the street...Better yet run someone with 20's, assuming both cars are similar save for the rims, and report back your findings.
10-08-2006, 07:09 PM
#60
Registered User
iTrader: (3)
Join Date: Jul 2005
Location: Sammamish, WA
Posts: 403
Likes: 0
Received 0 Likes
on
0 Posts
20s are fine if your car never sees the track - or is mainly a show car or a "look at me" car.
If you're serious about going fast, stick with 18s.... MAYBE 19s... and thats a big maybe.
I'd never run bigger than 18s. And for ****'s sake, I'd never run CHROME. yuck.
If you're serious about going fast, stick with 18s.... MAYBE 19s... and thats a big maybe.
I'd never run bigger than 18s. And for ****'s sake, I'd never run CHROME. yuck.