Offset?
07-17-2005, 07:38 AM
#1
RX-8 Powered Army of One
Thread Starter
Join Date: Mar 2005
Location: Pinconning Michigan
Posts: 147
Likes: 0
Received 0 Likes
on
0 Posts
Offset?
I am really dumb when it comes to rims and tires. I have NO experience with these. Could somebody please explain to me what the offset is? I am looking at getting new rims, most likely 19" but I am not sure. When I was looking at the TSW BREMMA (Because somebody in another post said they accept tpms?) I have the choice of:
Size PCD Offset
19x8.5 5x114.3/5x114.3 25
19x8.5 5x114.3/5x114.3 37
19x9.5 5x114.3/5x114.3 35
I understand size is the height and width, and I understand PCD is the bolt pattern, but I am unsure what the offset is.
Size PCD Offset
19x8.5 5x114.3/5x114.3 25
19x8.5 5x114.3/5x114.3 37
19x9.5 5x114.3/5x114.3 35
I understand size is the height and width, and I understand PCD is the bolt pattern, but I am unsure what the offset is.
07-17-2005, 09:41 PM
#2
Senior Member
Join Date: Jul 2003
Location: DC Metro Area, USA
Posts: 1,554
Likes: 0
Received 0 Likes
on
0 Posts
08-07-2005, 03:47 AM
#4
Registered User
Join Date: Feb 2004
Location: Sydney, Australia
Posts: 624
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by \\Konig\\
What is the perfect offset range for 19x8.5 and 19x9.5 rims that will give you no issues whatsoever with rubbing and fitment, provided you have the correct tire sizes?
BUMP!
Konig! Useful question!
08-07-2005, 07:42 AM
#5
New Member
Use a simple formula. The magic figure I think is 28mm before rubbing (please correct me if I am wrong)
Stock is 8" and +50 ... ok.
If it is 9" then you have 0.5" sticking out (or 12.5mm)
If you have +40 offset, you have 10mm sticking out.
If the first sentence presumption is correct,
9" you can have +34 or more
8.5" you can have +32 or more.
I can calculate off my heart :p so I use this
http://toy4two.home.mindspring.com/offset.html
:D
Stock is 8" and +50 ... ok.
If it is 9" then you have 0.5" sticking out (or 12.5mm)
If you have +40 offset, you have 10mm sticking out.
If the first sentence presumption is correct,
9" you can have +34 or more
8.5" you can have +32 or more.
I can calculate off my heart :p so I use this
http://toy4two.home.mindspring.com/offset.html
:D
08-11-2005, 02:19 PM
#6
beyond the ultraworld
Join Date: Oct 2003
Location: Southampton, UK
Posts: 479
Likes: 0
Received 0 Likes
on
0 Posts
OK, so what about the general suspension / load bearing of the wheels.
Presumably the running gear is setup to put certain loads through the rim. Anyway I'm asking as I am looking at getting 19x8.5JJ rims and have the choice of various offsets :
+35, +43
By my calculations, the stock rims have 150mm behind the hub and 50mm infront
With +43 and 8.5JJ this will be 149.25mm behind the hub and 63.25 infront
With +35 and 8.5JJ this will be 141.25mm behind the hub and 71.2 infront.
Now maybe none of this matters, but to me, the stock rims have a 3:2 ratio and the +35 a 2:1 - surely this must affect the handling, weight bearing etc
Or is it purely about the brake caliper clearance and not rubbing when turning etc
Presumably the running gear is setup to put certain loads through the rim. Anyway I'm asking as I am looking at getting 19x8.5JJ rims and have the choice of various offsets :
+35, +43
By my calculations, the stock rims have 150mm behind the hub and 50mm infront
With +43 and 8.5JJ this will be 149.25mm behind the hub and 63.25 infront
With +35 and 8.5JJ this will be 141.25mm behind the hub and 71.2 infront.
Now maybe none of this matters, but to me, the stock rims have a 3:2 ratio and the +35 a 2:1 - surely this must affect the handling, weight bearing etc
Or is it purely about the brake caliper clearance and not rubbing when turning etc
Thread
Thread Starter
Forum
Replies
Last Post
hufflepuff
Series I Wheels, Tires, Brakes & Suspension
6
05-30-2016 10:45 AM