Previous Thread
Next Thread
New Reply
Print Thread
Joined: Jan 2005
Posts: 51
Carbonblue2005GT
Member
Carbonblue2005GT

Member
2005 Toyota Celica GT

Joined: Jan 2005
Posts: 51
Walnut Creek, CA
Mar 17, 2:01pm - #419399 
WHP gain by changing tires?

On my celi I have stock 195/60/15 tires. I was thinking of going to 195/50/15 in hope of getting a little more punchy car (I never drive above 90 mph anyway). Would there be any gain by this, and how to calculate (roughly)?

Thanks!


*** Wars cannot be won, only survived ***
Joined: Nov 2004
Posts: 319
celicatuner
Member
celicatuner
2002 silver Toyota Celica
Member
2002 Toyota Celica

Joined: Nov 2004
Posts: 319
amherst, ma
Mar 17, 2:35pm - #419400 
I dunno about any HP gains to the wheels maybe if their lighter. it probably will give you alittle better accelleration cause it'll change your final ratio. you could figure it out if you got your gear ratios and final gear ratio and then make a ratio comparing the diameter of the two tire sizes.. the 50 series tires are going to be about 20 mm smaller in diameter so if you take the two diamters Pi * D to get the circumfrence of the two wheels then divide the two wheels sizes to get the ratio difference then applie that to the final drive and then you can compair that to your gear ratios to see what kind of new differences you'd have. you'd cut your top speed and increase your throttle response and accelleration alittle probably.

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

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
Mar 17, 3:42pm - #419401 
as a rule of thumb, the 50 series profile is usually lighter than the 60 series profile, but it doesnt have to be so watch out (a lot depends on the materials that make up the tire).

as far as whp gain..absolutely and utterly 0.

the lower profile tire will increase your car's cornering ability though.

Joined: Jul 2004
Posts: 1,174
combatc87
Specialist
combatc87

Specialist
2001 Toyota Celica GT

Joined: Jul 2004
Posts: 1,174
Frankfort, IL
Mar 17, 5:02pm - #419402 
After you get your huge gains, I've got a performance chip to sell you. NORMALLY I sell them for over $100, but I can let this one go for $60. I've also got a few GT-R emblems left, but because they give such huge power, I can't sell it to you until you build your engine rofl.

J/K pal, you won't expect any additional power, but it just may hid the ground quicker.


-Combatc87- / -SgT._BiLkO-
Joined: Jan 2005
Posts: 51
Carbonblue2005GT
Member
Carbonblue2005GT

Member
2005 Toyota Celica GT

Joined: Jan 2005
Posts: 51
Walnut Creek, CA
Mar 17, 7:33pm - #419403 
I guess there are a lot of people out there thinking they know about improving the performance of a car, one way suggested is to reduce tire size (to improve whp), another is using (electric) grounding kits rofl rofl rofl How stupid can one be...


*** Wars cannot be won, only survived ***
Joined: Aug 2003
Posts: 6,372
Speed4TheNeed
Caleb
Speed4TheNeed

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
Mar 17, 7:38pm - #419404 
^^ lol

one thing though..i dunno how in the hell it works..but grounding kits do consistently add 1 or 2 whp on a dynonameter for our cars. granted 1-2 whp is within the margin of error for dynonameters anyway, BUT the gain is consistent time and time again.

electric grounding kits though? i dunno..i think apexi makes one of those for like 250 bucks. whether it does anything at all is up in the air. either way i dont think its worth it

Joined: Oct 2004
Posts: 34
B17GSR
Member
B17GSR
Member
1992 Acura Integra GSR

Joined: Oct 2004
Posts: 34
BFE NE
Mar 17, 7:51pm - #419405 
you can make one for like $40 with some four gauge wire and ends, anyway, it makes your spark more effecient by allowing the engery out of the engine and to the frame and battery, so less resistance just like better spark plug wires

Joined: Aug 2004
Posts: 169
hs2g
Member
hs2g
1997 Red Toyota Celica GT
Member
1997 Toyota Celica GT

Joined: Aug 2004
Posts: 169
St. Cloud, Minnesota
Mar 17, 8:14pm - #419406 
Tires are just rubber material that goes on your wheels, not you engine. So don't expect any gains. It will however help you grip the ground for better traction if you get drag radials.

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

Caleb
2000 Toyota Celica

Joined: Aug 2003
Posts: 6,372
New Orleans, LA
Mar 18, 5:43am - #419407 
Originally Posted by B17GSR
you can make one for like $40 with some four gauge wire and ends, anyway, it makes your spark more effecient by allowing the engery out of the engine and to the frame and battery, so less resistance just like better spark plug wires


yes, that would be a regular grounding kit..which obviously has to do with electtricity. what i was reffering to about apexi though was that they make an 'electrical' electric grounding kit...or something. i forget it's exact name. anyway its like $250 and the gains are SUPPOSEDLY better.

most grounding kits only cost around $30-$50.

Join the conversation - Register Now or Log In to add your comment


Moderated by  isaac 

Member Spotlight
Celica_Noob
Celica_Noob
2001 Toyota Celica GT
Arizona

Posts: 175
Joined: July 2004
Thanks: My friends Tyler and John for install help
Random: Your next...
Show All Member Profiles 
Recent Topics
Alarm System Help
by MrJenkips. 07/24/2017 8:43 AM
Any idea what headlights these are?
by KoalasCelica. 07/22/2017 11:25 PM
FS: 2001 GTS
by Skip. 07/21/2017 11:25 AM
Water in footwell of rear passenger seat
by ciaranleeman. 07/21/2017 1:24 AM
A/C doesn't work, water leak
by Zaon_Prime. 07/20/2017 1:06 PM
2000 Celica GT instrument lights go out
by Herby. 07/19/2017 1:49 PM
Need some guidance to buying a celica!
by Hanate. 07/17/2017 4:23 PM
4th Gen owners...
by Cherry88Celica. 07/15/2017 1:04 AM
Customize Your Toyota Celica Privacy Policy · About · Contact
Privacy Policy · About · Contact
CelicaHobby.com is an independent Toyota Celica enthusiast website. CelicaHobby.com is not sponsored by or affiliated with Toyota Motor Sales, USA, Inc. in any way. The Toyota and Celica names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
© CelicaHobby.com, 2001-2017
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Snapshot build 20170611)