Tire Size Conversion Chart (Page 1/1)
Jcbigbie MAY 20, 09:19 AM
How wide is my tire? How tall is my tire?

Well, i created a spreadsheet with the more common tire sizes. It converts Eveything to inches, gives you side wall height and total height with a 15",16",17" and 18" rim.

My stock 88 gt size is Underlined.

Any suggestions are welcome.
A direct link to this sheet.
A Google docs link.










Search terms: fiero tire sizes, tire size options, fiero biggest tire size, fiero wheel sizes, tire combos

[This message has been edited by Jcbigbie (edited 06-21-2020).]

Dennis LaGrua MAY 21, 06:20 AM
Nice write up but the supply chain on 15" tires is thinning. The modern look of larger rims is here.. What I try for a more modern look, is to use tires that have about the same OD as the OEM tires. This way the speedometer error will be minimal or not at all.

For 17' wheels I use 225 x 45 R17 rear and 205 x 45 R17 front
For 16's wheels I use 225 x 50 R16 rear and 205 x 50 R16 front

As for 18's I wouldn't use them. The ride is rough enough with the 17's. Actually the 15" tires provide the best ride but IMO the larger rims do modernize the look..
Not trying to hijack your thread; just provide something useful as you have done.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Jcbigbie MAY 21, 07:52 AM
Thanks.

I just added 16" - 18" rim sizes to the sheet.
Dennis LaGrua MAY 21, 04:25 PM

quote
Originally posted by Jcbigbie:

Thanks.

I just added 16" - 18" rim sizes to the sheet.



With so many Fiero owners going to sport wheels this is very helpful.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Spadesluck MAY 21, 06:42 PM
Very helpful for sure. I can not tell you how many times I use a google chart to look up widths and rim sizes when tire shopping.
Jcbigbie MAY 22, 01:41 PM
If anyone has a size they would like to see here, let me know. I can edit this file very quickly.

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88 gt
5 speed, Fidanza aluminum flywheel
2.8 V6, 1.6 roller rockers
Leather interior

Raydar MAY 26, 04:25 PM
Very cool! Thanks for your effort.
Habanera Hal MAY 26, 05:12 PM
For any tire size, wheel width/diameter, offset, etc., try this:

http://www.rimsntires.com/specspro.jsp

Will also offer clearance specs, speedo change, and other info.
Jcbigbie JUN 22, 09:55 AM
Just added support for 19" rims.