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wheel and tire questions by ionstorm666
Started on: 03-22-2004 11:57 PM
Replies: 7
Last post by: Blade_69 on 03-23-2004 10:31 AM
ionstorm666
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From: Milton, ON
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Report this Post03-22-2004 11:57 PM Click Here to See the Profile for ionstorm666Click Here to Email ionstorm666Send a Private Message to ionstorm666Direct Link to This Post
I will be going with one of three setups on my fiero. Either 17's all around, 16/17s, or 17/18s. I have a couple questions. I would like to try and keep the speedo as close as possible to being correct.

1) Can the 18" wheels fit on the stock rear suspension of an 85 gt?
2) If I use 17 front and 18 rear which tire sizes should I use?
3) For 16 front and 17 rear which tire size?

Anything else I should consider?

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PCGamer
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Report this Post03-23-2004 12:00 AM Click Here to See the Profile for PCGamerClick Here to Email PCGamerSend a Private Message to PCGamerDirect Link to This Post
watch the spring perch in the back... ++ probably a 45 or 50 profile tire...

good luck..

pc


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ScottF
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Report this Post03-23-2004 02:48 AM Click Here to See the Profile for ScottFClick Here to Email ScottFSend a Private Message to ScottFDirect Link to This Post
Use the 'Search' function to find threads about max tire sizes, fitment, clearances, etc. Some good ones last summer.
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jetman
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Report this Post03-23-2004 04:43 AM Click Here to See the Profile for jetmanClick Here to visit jetman's HomePageClick Here to Email jetmanSend a Private Message to jetmanDirect Link to This Post
Here is a tire caculator that helped me keep my spedometer accurate through my tire change.
http://gs.tolan-hoechst.com/tirecalc.htm

For what its worth,
87GT with 7-1/2 inch wide wheels,
215 /45/ R17 front and 235/ 45/ R17 back and only had a half a pinky finger space between my shock tower and my rear tire.

------------------
jetman
Silver 86 SE 2M6 4-speed, with "check wallet light"

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ionstorm666
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Report this Post03-23-2004 10:05 AM Click Here to See the Profile for ionstorm666Click Here to Email ionstorm666Send a Private Message to ionstorm666Direct Link to This Post
If I want to keep the speedo close as possible to stock, and would like to use a 16/17 combo is it the rear wheels or the front wheels I need to have close to the stock fiero wheels?
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DrDave
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Report this Post03-23-2004 10:23 AM Click Here to See the Profile for DrDaveSend a Private Message to DrDaveDirect Link to This Post
The Rear Tires.
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Rickady88GT
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Report this Post03-23-2004 10:28 AM Click Here to See the Profile for Rickady88GTClick Here to Email Rickady88GTSend a Private Message to Rickady88GTDirect Link to This Post
You need to keep the rear wheels at 25 inches high to stay in the right range for the speedo.
If you go with a wide tire the profile will have to be low. My 17x8 rear rims have 255-45's on them but they are 26.1 inch tall and will mess with the stock speedo but I am running the 4T65E with the stock Olds speedo cluster and that is calibrated for 26 inch tires. If you go with 235-40's on a 17 inch rim that is 7.5 inch wide you should be OK.

------------------

Rickady88GT QuadCam 3.5 V6

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Blade_69
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Report this Post03-23-2004 10:31 AM Click Here to See the Profile for Blade_69Click Here to Email Blade_69Send a Private Message to Blade_69Direct Link to This Post
See my sig. With what I'm running, my speedo didn't change much at all.

Try this calculator. Not as many calculations as the one above. I know it says Miata, but I think size is size and you should get the same result.

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

------------------
BLADE

'86SE
Engine rblt by Jasper (Going V8 in 2004..Hopefully)
Hypertech Chip
Low-temp Fan Switch
Low-temp Thermostat
Grand Am rear brakes
215/45-17 front, 235/45-17 rear Falken Ziex ZE-502

[This message has been edited by Blade_69 (edited 03-23-2004).]

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