225/45/R17s or 235/40/R17s - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 02-03-2006, 11:59 AM   #11
Senior Member
True Car Nut
Thread Starter
 
Join Date: Dec 2002
Location: Halifax, Canada 91SSE / 97SSEi
Posts: 5,857
Thanks: 0
Thanked 0 Times in 0 Posts
Merlin 91/97 is on a distinguished road
Default

Well actually the above info somewhat helps....

I 'was' running 225/55/17s on her last summer..... BFG tires...
... well actually for 2 summers....

Now I'm thinking about putting on BFG KDWs that are 225/45/17
I was worried that they would either be too small or too large.... some people think that they are larger then the 225/55/17s I had on it.... but reading the info on tirerack, it sounds like a 225/45/17 would be smaller height then the 225/55/17
55% of 225 = 123.75
45% of 225 = 101.25

Is that correct?
Merlin 91/97 is offline   Reply With Quote
Old 02-03-2006, 12:02 PM   #12
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

yes, a smaller sidewall means a smaller OD.
corvettecrazy is offline   Reply With Quote
Old 02-03-2006, 12:12 PM   #13
Senior Member
True Car Nut
Thread Starter
 
Join Date: Dec 2002
Location: Halifax, Canada 91SSE / 97SSEi
Posts: 5,857
Thanks: 0
Thanked 0 Times in 0 Posts
Merlin 91/97 is on a distinguished road
Default

So 215/50/17s would be a smaller width, but larger sidewall height....
215 * 50% = 107.5
Merlin 91/97 is offline   Reply With Quote
Old 02-03-2006, 12:13 PM   #14
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

yes, they would be narrower but have a taller sidewall.
corvettecrazy is offline   Reply With Quote
Old 02-03-2006, 12:18 PM   #15
Senior Member
True Car Nut
Thread Starter
 
Join Date: Dec 2002
Location: Halifax, Canada 91SSE / 97SSEi
Posts: 5,857
Thanks: 0
Thanked 0 Times in 0 Posts
Merlin 91/97 is on a distinguished road
Default

Excellent.... thanks for the help guys
Merlin 91/97 is offline   Reply With Quote
Old 02-03-2006, 01:09 PM   #16
Senior Member
Posts like a Northstar
 
Join Date: Feb 2003
Location: Sacramento, CA WCBF '06, '07 survivor
Posts: 658
Thanks: 0
Thanked 0 Times in 0 Posts
rrounds is on a distinguished road
Default

alot of us run 255/50-17 on our cars.
stock on my car was 235/55-17 and the new tires (255/50-17) have
the same diameter.

ROD
rrounds is offline   Reply With Quote
Old 02-03-2006, 03:23 PM   #17
Senior Member
Posts like a Turbo
 
Join Date: Jul 2005
Location: North East Texas
Posts: 211
Thanks: 0
Thanked 0 Times in 0 Posts
klystronik is on a distinguished road
Default

225/55/17 is recommended..235/55/17 will work too...its all relative diameters..a sidewall on a 225/55 is actually a bit shorter than that of a 235/55..just because the numbers are the same doesn't mean the size is..i worked in a tire shop and compared sizes alot when I was bored..lol

with 225/45/17'* your speedo will be off..your actually be going a couple mph'* slower than what it reads.
klystronik is offline   Reply With Quote
Old 02-03-2006, 04:00 PM   #18
Senior Member
True Car Nut
Thread Starter
 
Join Date: Dec 2002
Location: Halifax, Canada 91SSE / 97SSEi
Posts: 5,857
Thanks: 0
Thanked 0 Times in 0 Posts
Merlin 91/97 is on a distinguished road
Default

Quote:
Originally Posted by klystronik
225/55/17 is recommended..235/55/17 will work too...its all relative diameters..a sidewall on a 225/55 is actually a bit shorter than that of a 235/55..just because the numbers are the same doesn't mean the size is..i worked in a tire shop and compared sizes alot when I was bored..lol

with 225/45/17'* your speedo will be off..your actually be going a couple mph'* slower than what it reads.
Thanks for the info.... my speedo isn't a problem... I have the calibration tool/thing from Intense.
The tire also comes in 235/45/17 so that might be an option too....
(no 235/(50or55)/17
Merlin 91/97 is offline   Reply With Quote
Old 02-20-2006, 11:20 AM   #19
Senior Member
True Car Nut
Thread Starter
 
Join Date: Dec 2002
Location: Halifax, Canada 91SSE / 97SSEi
Posts: 5,857
Thanks: 0
Thanked 0 Times in 0 Posts
Merlin 91/97 is on a distinguished road
Default

Has anyone used 235/40/17s on their cars?

Just wondering if 235 is too wide.... I'm running 225 right now.
Merlin 91/97 is offline   Reply With Quote
Old 02-20-2006, 11:36 AM   #20
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

235 and 245 will clear all hardware at full lock on the steering no problem. MIGHT be getting close at 245, but nothing major.

With a little work, Gordy did 255'* on his 95.

This is for 92-99'*. Not sure about other gens. Rumor has it the 87-91 crowd have a little less room in the wells up front, but the 2000'* have a little more?
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Saskatoon speeder clocked over double the limit at 235 km/h near Calgary niceguy General GM Chat 5 09-05-2011 11:03 PM
.. 235/55R16 erics95se General GM Chat 8 08-03-2006 12:16 PM
dont EVER put 235/45/ZR17's on your bonnie harofreak00 Your Ride: GM Pictures & Videos 38 06-22-2006 12:53 AM
235/55 VS 225/60 tire decision 1993 SLE Performance, Brainstorming & Tuning 6 04-18-2006 08:15 PM
Running Hot (235+) speedin 1992-1999 20 06-10-2004 02:27 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:11 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.