What size tires?
Thread Starter
MBWorld Fanatic!
Joined: Mar 2003
Posts: 2,434
Likes: 1
From: So Cal
2010 RRS ; BMW K1200R; 14 E350 ; 14 RRS on order
What size tires?
Hi all,
I am thinking of going with 18"x9 or 18"x9.5. I don't know much about tire measurements.
What do the different tire dimentions mean?
like 255/40/18
I know the 18 is the size of the wheel but what do the rest really mean? What size would go on the above mentioned wheels?
I am sure one stands for profile and the other for the width or somthing like that but its not very intuitive.
Thanks and forgive a newbie for dumb questions.
I am thinking of going with 18"x9 or 18"x9.5. I don't know much about tire measurements.
What do the different tire dimentions mean?
like 255/40/18
I know the 18 is the size of the wheel but what do the rest really mean? What size would go on the above mentioned wheels?
I am sure one stands for profile and the other for the width or somthing like that but its not very intuitive.
Thanks and forgive a newbie for dumb questions.
Senior Member
Joined: Nov 2002
Posts: 454
Likes: 0
From: NC
'03 Mercedes E320
Here's a good site that lets you visually alter the size components: Wheel diameter, tire diameter and aspect. It may help you visualize the relationships. Actual fit of a non-standard tire is a matter for trial and error in many cases. http://www.miata.net/garage/tirecalc.html
Changes in wheel size are best recommended by a professional, particularly the offset of the wheel.
Changes in wheel size are best recommended by a professional, particularly the offset of the wheel.
