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Joined: Feb 2004
Posts: 1
MikeDogg
New Member
MikeDogg Aug 22, 2:48pm - #256161 
2000 Blue Toyota Celica
New Member
2000 Toyota Celica

Joined: Feb 2004
Posts: 1
Maryland
19" Rims and Speedometer

I'm thinking about getting some 18s or 19s, but i'm leaning towards the 19s. Wondering how bad it will mess with the speedometer, and if the computer be reprogrammed somewhere to recalibrate the speedometer to compensate for the rims?
Joined: Sep 2003
Posts: 246
Double_Ohh_GTS
Member
Double_Ohh_GTS Aug 22, 4:51pm - #256162 
2000 Suzuka Blue Toyota Celica
Member
2000 Toyota Celica

Joined: Sep 2003
Posts: 246
Vancouver, Canada
yeah it fucks up the ready and it changes your lift point up to around 6,100RPM and it slows you down overall, i don't know the exact ratio of how much faster you are actually going but it isn't much say 100km/h is actually 103 to 107km/h

but they look fucken sweet!
Joined: Jul 2004
Posts: 2,016
Haulin_A_Doo
Specialist
Haulin_A_Doo Aug 22, 8:39pm - #256163 
Specialist

Joined: Jul 2004
Posts: 2,016
Ontario
Lift is not effected by the speed of the tires, lift will engage at the same RPM regardless of speed or gear you are in.

The tires will however change the gearing ratio you have to the road, this will effect torque & the speed you go in & out of each gear. Putting larger than stock circumference tires on a car is a dumb move, especially on a 4 cylinder where your starving for torque to begin with. thumbsdown
Joined: Nov 2003
Posts: 2,224
oas
Specialist
oas Aug 22, 9:48pm - #256164 
Specialist

Joined: Nov 2003
Posts: 2,224
get some 17 racing rims
Joined: Nov 2003
Posts: 2,224
oas
Specialist
oas Aug 22, 9:48pm - #256165 
Specialist

Joined: Nov 2003
Posts: 2,224
get some 17 ligth racing rims thumbsup
Joined: Sep 2003
Posts: 158
simonw
Member
simonw Sep 23, 9:06am - #256166 
2001 White Toyota Celica ZR
Member
2001 Toyota Celica ZR

Joined: Sep 2003
Posts: 158
Roll 18 light thumbsupracing rim
Joined: May 2002
Posts: 6,007
isaac
ECelica Admin
isaac Sep 23, 9:11am - #256167 
2001 Absolutely Red Toyota Celica GT
ECelica Admin
2001 Toyota Celica GT

Joined: May 2002
Posts: 6,007
Los Angeles, CA
Featured Articles >> [WHEELS] Tire Size / Speedometer Error Calculator

This script is for comparing original equipment tire size to alternate after market tire sizes.

The following is an example to help to decode a tire size like 185/65R14
185 = tire width in millimeters, measured from sidewall to sidewall
60 = sidewall ratio, the ratio of sidewall height to tire width
15 = wheel rim diameter in inches

Wheel Speed Calibration script...
https://www.celicahobby.com/tech/speedcalc.html

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Joined: Dec 2003
Posts: 785
celicat23
Senior Member
celicat23 Sep 23, 4:18pm - #256168 

Senior Member
2000 Toyota Celica

Joined: Dec 2003
Posts: 785
norway
To calculate, there's also:

http://www.miata.net/garage/tirecalc.html

Anyways -- If you want your celica to look the dogs dangly bits, you go with 19's. They're hella-sweet, and fit the celica perfect. I'm totally lovin' my 19's!

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Joined: Oct 2003
Posts: 1,549
JBing
Pizza Geek
JBing Sep 23, 6:33pm - #256169 

Pizza Geek
2002 Toyota Celica GT

Joined: Oct 2003
Posts: 1,549
Detroit
When I bought my 19's I did a little math to find out how far off the speedo was and it turned out to be almost nothing. using Distance
---------- = Rate
Time

I came up w. a 2 mph difference at 35

and a 4mph difference at 65

So basically you have nothing to worry about

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FS: 19" ADR M Sports
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