Sizing tires... need some help

Started by KaZ · around Apr 2005 · 7postsvBulletin 2004–05

This thread was saved without dates. "Around Apr 2005" is estimated from neighbouring threads.

KaZdate not saved · #1

Ok... I've got some 16s on my S12... 16x7.5". Currently running 225/50s and they're scrapping like a mofo on the inside of the rear fenders... So I was searching sizes... for stock sizes... you've got...

Stock:
195/65/14 = 609.1 mm Diameter
205/60/14 = 601.6 mm Diameter

225/50/16 = 631.4 mm Diameter

So... I'd like a narrower tire...

215/50/16 = 621.4 mm - are rather rare and expensive...
205/50/16 = 611.4 mm - are not so rare, and rather inexpensive...
205/55/16 = 631.9 mm - comes in a tire I really love (Sumitomo HTR+, Ultra Performance All-Season, woot, snow baby!)

So... that said... what can I technically run on a 7.5" rims safely? I'd like to start drifting this bad boy eventually too... and obivously most drifters run narrower tires... just curious how narrow I could go safely...

Thanks,

sidewaysdate not saved · #2

i mucked up and got some 15" 195's with like a 60 sidewall they work fine

Magnumdate not saved · #3

you can use 205 55 16 on a 7.5" wide wheel.

Nebuchernezzerdate not saved · #4

I run 16x8s on the back of my car and with the right offset 9s will squeeze under i think. I run a 205x55 R16 tyre on the 8" rim for added clearance tho cos the cradle moves around when drifting (mmm need solid mounts) but i do have a pair of 225x50 R16s i'm going to try out on 9" rims soon.

KaZdate not saved · #5

Well on the Z31 rims I have the offset is really low, if there is any... I think it might be 0... they stick out a touch... so they make contact with the fenderwells when compressed under load... =(

Spooleddate not saved · #6

The earlier Z31 rims 15x6.5 fit under without incident. That's what I run on my car for autocrossing. I think the offset on the rims you have is +20. They have specs on Z31.com, but those Z nazi's make it difficult to find anything. My 16x8.5" rims from my Z32 with a 245/45 tire fit perfect. Edit: I should say, fit perfect on the rear only. The fronts don't fit..........yet.

vg30e_x2_200sxdate not saved · #7

Check this out. It's in inches, but you can always convert if you need to.

http://www.sstire.com/tireheights.html

If you are looking for a narrower tire with the right height a 195/55/16 would do the trick. It's less than 1/2in taller than a 195/65/14.

I have 205/60/15 on my SE (stock size) and they are listed at 24.69in.

Just a referance.