newfer23

I posted this in the wheel and tire section but got no responses so I'll try here. What is the max tire size I can put on the stock 17" GT rims. I wanted to go 275 40 17 but I don't know if they will fit. And correct me if I'm wrong but are the stock rims 17x8? Further, if anyone knows of any good tire/wheel combos right now please feel free to share. Thanks!

2oo5stang

Stock is 17X8 and the max is 275's. i think 18X9 or 18X10's would be the way to go, going that way for me. then get some 295 or 305 tires for them.

moosestang

How much does a 305 tire weigh? I was looking at a 275/55/17 to put on the stock rims until I noticed that they weigh 40lbs each!!!!!!!! That's 11lbs of added rotational mass. Now i'm thinking a 255/50/17 is a better option, but won't look nearly as good as a 305.

2k05gt

Utilizing the search engine on this site would yeild a wealth of info on this topic,
Also give this a try

Calculators:
This is a Microsoft Excel Worksheet the calculates Rear End Gear changes and thereeffects to RPM and Speed. Also there is a calculator that will assist you in selecting the correct Tire size for your car including whatWheel andTires combo will fit.

Download the sheet here. (there are no Macros in this version)
http://home.comcast.net/~swieduwilt01/Mustang_Calculations.xls

you can get an excel viewer that plugs into your browser here:
http://www.microsoft.com/downloads/details.aspx?FamilyID=c8378bf4-996c-4569-b547-75edbd03aaf0&displaylang=EN (thanks to odiaz for this link)

LanceH

Just so you know, while an awesome piece of work, the Excel spreadsheet is worthless with just the viewer(you can't do anything with it, just look at it).
There is currently a free trial for 60 days of the Office 2007 suite or you can email it to yourself at work if you have Excel there.

Lance

stanngg

I posted this same question awhile back and received some decent feedback. Especially from LanceH. Check out this thread...We were talking about 18inchers but this should still be helpful.

https://mustangforums.com/m_2480450/...tm.htm#2491130

cookiemonster

Or if you don't have Excel, you can calculate the numbers on this webpage:

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