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Joined: Apr 2004
Posts: 312
2kVeilsideGTS
Member
2kVeilsideGTS

Member

Joined: Apr 2004
Posts: 312
Jacksonville, FL
May 11, 12:43pm - #176672 
rim sizes /w false speedometer readings.also slower 0-60?lilhelp

ok so im going from a 2000 GTS 16" rims to something else and im not sure what to do. I LOVE the look of 18" rims and i would wanna get like 235/40r 18" for tires but how much would that slow me down in the 0-60 and also how do i realign my speedo? anyone have a converter site or anything? i herd a friend talking about it but it was a long time ago. I just don't wanna get 18" and slow down my car that much. thanks peeps

Joined: Apr 2003
Posts: 1,917
tru_Asiatik_Pride
Blue MnM
tru_Asiatik_Pride

Blue MnM
2003 Toyota Celica

Joined: Apr 2003
Posts: 1,917
Southern California
May 11, 12:59pm - #176673 
18" will slow you the hell down, this is coming from experience. i dont race anyways so if you plan to race get 17" or better yet stick with 16"
as far as the speedo dont mess with it just leave it be b4 you fudge something up
i think if you go with bigger rims its about 3-5mph off so if your running 65mph your actual speed is 70 mph...not sure though thumbsup

Joined: Apr 2003
Posts: 1,899
Gen7fan
ThE iRoN mAiDeN
Gen7fan
2003 silver streak Toyota Celica GT
ThE iRoN mAiDeN
2003 Toyota Celica GT

Joined: Apr 2003
Posts: 1,899
Maryland
May 11, 1:36pm - #176674 

Joined: Apr 2004
Posts: 312
2kVeilsideGTS
Member
2kVeilsideGTS

Member

Joined: Apr 2004
Posts: 312
Jacksonville, FL
May 11, 11:31pm - #176675 
you sure it will slow me down severely? now im getting scared because i love the rims and 18" looks so much hotter dropped than 17"...AHHH anyone got more info...btw thanks lots for speed calc it rox:)

Joined: Aug 2003
Posts: 6,372
Speed4TheNeed
Caleb
Speed4TheNeed

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
May 12, 4:11am - #176676 
^^ it really depends on how light your wheels are.

as a rule of thumb, 18" wheels are heavier than 17" wheels are heavier than 16" wheels and so on. this is quite obvious.

however, some companies specialize in making very light wheels that still have big diameters (up to 20"). one such company is centerline..who advertises their 20" wheels to weigh 23 lbs...or about the same weight (give a pound or two) of your stock 16" gts alloys.

diameter does have a little bit to do with it..but most importantly it's weight. if you buy an 18" rim that weighs about 22-23 lbs then you won't really see a Performance decrease. obviously the problem is just finding an 18" wheel that weighs that..the more specialized you get the less options are available. thumbsup

Joined: Jan 2004
Posts: 558
narcolepsy123456
Senior Member
narcolepsy123456

Senior Member
00 Toyota Celica GT

Joined: Jan 2004
Posts: 558
nc, usa
May 12, 3:51pm - #176677 
umm, diameter has a lot to do with it. if you run steel 15s they'll accelerate a lot quicker due to the fact that their mass is spread evenly throughout the entire wheel. however, if you go with an 18, no matter how light, it will always accelerate slower because the moment of inertia is twice that of the solid piece. simple physics, solid cylinder is .5 mass x (radius)squared ; where a hollow cylinder is mass x (radius)squared. so the wheels would have to weigh a hell of a lot less to be close to the speed of a smaller wheel. thumbsup

Joined: Oct 2003
Posts: 2,030
RevMonster
Masta OC
RevMonster

Masta OC
2003 Toyota Celica

Joined: Oct 2003
Posts: 2,030
Orange County, Ca
May 12, 3:55pm - #176678 
Maybe I'm just crazy, but if you get the right size tire for your new wheels... the speedo should only be off by fractions of a mph.


I'm just a crosshair
I'm just a shot away from you
Joined: Apr 2004
Posts: 312
2kVeilsideGTS
Member
2kVeilsideGTS

Member

Joined: Apr 2004
Posts: 312
Jacksonville, FL
May 12, 11:37pm - #176679 
good stuff:) tough call i love the look of 18" but i may go with 17" to save myself some money and some Performance

Joined: Sep 2002
Posts: 3,030
Erick
Bread Fishing..
Erick

Bread Fishing..
2001 Toyota Celica GT

Joined: Sep 2002
Posts: 3,030
Bay Area, CA
May 12, 11:48pm - #176680 
try the calculator Gen7fan posted thumbsup


LNK
"you only need something when you know it exists..then it becomes a want"
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