Chevy HHR Network Forums
Search

Welcome to the Chevy HHR Network forums. The Chevy HHR Network is the leading resource for Chevy HHR owners.
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our FREE community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
If you have any problems with the registration process or your account login, please contact us.

Register Forgot Password?

Tires & Wheels Tire and Wheel discussions. What Fits, Show Tires, Custom Wheels

Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread Display Modes
Old 11-14-2007, 04:54 PM   #1
New Member
 
Join Date: 10-10-2007
Location: Phila. PA.
Member #: 4540
Posts: 11
Check out my gallery 
oversize tires

Hey all,
I just bought a set of smoothies for my as yet to be delivered HHR. I want to get a set of tires for the rims. I believe the factory size is either 205-5516 or 215-5516 (not exactly sure of the size) anyway if I wanted to go to a wider tire say a 50 series and mantain the same tire height ( would the 50 series be too wide for the rims? the rim width is the same as factory 6 1/2 I think) what would the new size be? 245-5016, larger? Are there any cross reference charts out there that give the actual tire height?
Thanks,
-Patrick R
FUTHRRE OWNER is offline   Reply With Quote
Old 11-14-2007, 05:06 PM   #2
Senior Member
 
Join Date: 07-12-2006
Location: NE Ohio
Member #: 1428
Posts: 1,746
Images: 117
Check out my gallery 
First of all, the 50 series you speak of is the aspect ratio. That's the percentage of the section width in millimeters. The stock 16" size is 215/55/R16. If you look @ tirerack.com they explain all of this in detail. Also, the have comparison charts for different sizes, giving overall diameter for each size. Very informative!
jeffs396 is offline   Reply With Quote
Old 01-23-2008, 11:02 PM   #3
Senior Member
 
Join Date: 01-01-2008
Location: Windsor, Ca
Member #: 5186
Posts: 998
Images: 68
Check out my gallery 
very good answer.
I just clicked on tire rack's site, which I have been to many times.

find a tire in the stock size, and look at it's "specs" link. Overall diameter is quite crucial...as is the section width.

then look at a "plus 0" size which means same size rim, different size tire. The first number is the tread's section width...the second number is the aspect ratio(a % of the width = the hight of the sidewall), and the third number is the wheel's O.D.(overall diameter)

so...a 215/50-17 has a tread width of 215mm. the aspect ratio is 50, meaning 50% of the tread width is the sidewall height, and the 17 is the wheel size.

select a 215/50-17
the look at a 225/50-17

you will find differences in load capacity, as well as overall diameter.

the two tires I looked at showed a O.D. of 25.5 for the 215/50 and the O.D. of a 225/50-17 is 25.9

therefore, a 225/50-17 tire has a O.D. that is .4 taller than the 215/50-17

that is measured without any load on the tire, inflated to specs, and set for 24 hours.

Now, if you load the tire(on the car, under weight) the O.D. will be reduced by 50% due to what is referred to as "static loaded radius"...the bottom half of the tire...the part that is actually under "load". The top half of the tire will not affect ride height because it has no load on it.

therefore, if the O.D. difference is advertised at .4, then the SLR or 'static loaded radius" is 1/2 that... or .2

so, a 225/50-17 is only .2 taller than a 215/50-17
it is also only 3/10" wider, which...isnt much.

hope that helps.

My next set of tires will most likely be a 225/50-17...larger footprint(3/10ths), but barely any taller, so fuel mileage, and final drive gearing wont be affected too much, if at all.
__________________
*Former Owner* of a 2006 DSM 2LT
*current owner* of a 2009 Victory Red SS
http://www.chevyhhr.net/gallery/files/5/1/8/6/SmokeWagonSigTag.jpg
Smoke Wagon is offline   Reply With Quote
Old 01-24-2008, 08:52 PM   #4
Senior Member
 
Join Date: 08-16-2007
Location: Seaforth
Member #: 4097
Posts: 396
Images: 16
Check out my gallery 
Got this from someone else here
http://www.miata.net/garage/tirecalc.html
Thanks to whoever it was
__________________
Jim DaddyO
Some froggies in the car!

JimDaddyo is offline   Reply With Quote
Old 01-24-2008, 09:19 PM   #5
Senior Member
 
Join Date: 06-27-2006
Location: Kingsville On
Member #: 1290
Posts: 785
Images: 26
Check out my gallery 
Quote:
Originally Posted by FUTHRRE OWNER View Post
Hey all,
I just bought a set of smoothies for my as yet to be delivered HHR. I want to get a set of tires for the rims. I believe the factory size is either 205-5516 or 215-5516 (not exactly sure of the size) anyway if I wanted to go to a wider tire say a 50 series and mantain the same tire height ( would the 50 series be too wide for the rims? the rim width is the same as factory 6 1/2 I think) what would the new size be? 245-5016, larger? Are there any cross reference charts out there that give the actual tire height?
Thanks,
-Patrick R
HI Patrick try out this site real easy to use www.scirocco.org/ just click on the word tires.What`s nice about this one is it has the stock fender clearance calculator so just insert that info then when you play with the different sizes you can see if it`s going to rub or not.
__________________
GTOMIKE is offline   Reply With Quote
Old 01-24-2008, 09:49 PM   #6
Senior Member
 
Join Date: 11-14-2007
Location: Planet Earth
Member #: 4784
Posts: 1,253
Images: 43
Check out my gallery 
Excellent Post Smoke. Thank you. Even Mr. Michilen gives you a thumbs up on your post!!

Click the image to open in full size.

Peace,

MWG2
MWG2 is offline   Reply With Quote
Old 01-24-2008, 09:49 PM
 
 
 
submit to reddit
Reply

   
 

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 02:43 PM.
vBulletin copyright ©2000 - 2014, Jelsoft Enterprises Ltd. Vb Style © vb-skins.com

Advertising - Privacy Statement - Terms of Service - Cookies - Jobs

Copyright © 2005 - 2013 Internet Brands, Inc. All rights reserved.
Chevy HHR Network Forums