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Scraping issue

PostPosted: Tue Sep 01, 2009 10:45 am
by talev788
I just recently had 18 inch wheels with low profiles put on my car
The car hasn't been lowered, but when i have at least 2 people in the back seat or 1 fat person in the back seat the wheels scrape like hell!!!!!

is there a way i can fix this issue?

Re: Scraping issue

PostPosted: Tue Sep 01, 2009 10:57 am
by Hotwire
talev788 wrote:I just recently had 18 inch wheels with low profiles put on my car
The car hasn't been lowered, but when i have at least 2 people in the back seat or 1 fat person in the back seat the wheels scrape like hell!!!!!

is there a way i can fix this issue?


Pending the offset of the wheels and the tyre size, I'd suggest you probably need to roll the rear guards. Generally around $50 per corner.

Re: Scraping issue

PostPosted: Tue Sep 01, 2009 12:10 pm
by teK--
Hotwire wrote:
talev788 wrote:I just recently had 18 inch wheels with low profiles put on my car
The car hasn't been lowered, but when i have at least 2 people in the back seat or 1 fat person in the back seat the wheels scrape like hell!!!!!

is there a way i can fix this issue?


Pending the offset of the wheels and the tyre size, I'd suggest you probably need to roll the rear guards. Generally around $50 per corner.


+1. If you haven't even lowered yet you are probably being over optimistic with your wheel /tyre width and offset.

Re: Scraping issue

PostPosted: Tue Sep 01, 2009 4:29 pm
by Ric
MY02 => seven years old. Rear springs may be sagging.
what exactly was the original tyre size, and what you have on now?

Re: Scraping issue

PostPosted: Tue Sep 01, 2009 5:08 pm
by talev788
Ric wrote:MY02 => seven years old. Rear springs may be sagging.
what exactly was the original tyre size, and what you have on now?


original size was the 16 inch stockies

i now hav 18 inch osaka vertecs with low profiles

Re: Scraping issue

PostPosted: Tue Sep 01, 2009 6:09 pm
by jdm rsk
talev788 wrote:
Ric wrote:MY02 => seven years old. Rear springs may be sagging.
what exactly was the original tyre size, and what you have on now?


original size was the 16 inch stockies

i now hav 18 inch osaka vertecs with low profiles

If the offset is less than + 50 you will need to roll the lip on the rear guards. + 55 you do not. I run +55 and have not problem

Re: Scraping issue

PostPosted: Tue Sep 01, 2009 6:24 pm
by Ric
talev788 wrote:
Ric wrote:MY02 => seven years old. Rear springs may be sagging.
what exactly was the original tyre size, and what you have on now?


original size was the 16 inch stockies

i now hav 18 inch osaka vertecs with low profiles

You've just told me the wheel size. I asked for the exact tyre sizes. e.g. 215/45R18

Re: Scraping issue

PostPosted: Tue Sep 01, 2009 7:07 pm
by talev788
Ric wrote:
talev788 wrote:
Ric wrote:MY02 => seven years old. Rear springs may be sagging.
what exactly was the original tyre size, and what you have on now?


original size was the 16 inch stockies

i now hav 18 inch osaka vertecs with low profiles

You've just told me the wheel size. I asked for the exact tyre sizes. e.g. 215/45R18


oh sorry dude wasnt paying attention, i'll go check it out wen i get a chance

Re: Scraping issue

PostPosted: Wed Sep 02, 2009 6:38 pm
by RX_MY02
Ric wrote:
talev788 wrote:
Ric wrote:MY02 => seven years old. Rear springs may be sagging.
what exactly was the original tyre size, and what you have on now?


original size was the 16 inch stockies

i now hav 18 inch osaka vertecs with low profiles

You've just told me the wheel size. I asked for the exact tyre sizes. e.g. 215/45R18


Stock Tyre is 205/50/16
i am running 215/35/18 and my car is lowered and i have no issues with scrubbing

Re: Scraping issue

PostPosted: Wed Sep 02, 2009 7:10 pm
by Ric
RX_MY02 wrote:Stock Tyre is 205/50/16
i am running 215/35/18 and my car is lowered and i have no issues with scrubbing


205/50/16 => 611.4mm diameter
215/35/18 => 607.7mm diameter

So you've actually gone 0.6% smaller. See http://www.miata.net/garage/tirecalc.html

Re: Scraping issue

PostPosted: Wed Sep 02, 2009 7:19 pm
by GTB Liberty
Ric wrote:
RX_MY02 wrote:Stock Tyre is 205/50/16
i am running 215/35/18 and my car is lowered and i have no issues with scrubbing


205/50/16 => 611.4mm diameter
215/35/18 => 607.7mm diameter

So you've actually gone 0.6% smaller. See http://www.miata.net/garage/tirecalc.html


Sweet site - Thanks for it Ric.

Re: Scraping issue

PostPosted: Thu Sep 03, 2009 9:04 am
by Hotwire
OK Just looked up the Osaka Vertec wheels, and the 18x7.5 size is listed as follows:
18x7.5 5/100, 5/108, 5/114.3 35mm - 45mm MATT BLACK

SO I'd say you have 18x7.5 with a 45mm offset. This sounds like it may be a bit to agressive for a Gen III, so Rolling the guards is probably going to be the only way you can fix this.

What width tyre are you running?

Re: Scraping issue

PostPosted: Sun Sep 06, 2009 6:39 pm
by RX_MY02
Ric wrote:
RX_MY02 wrote:Stock Tyre is 205/50/16
i am running 215/35/18 and my car is lowered and i have no issues with scrubbing


205/50/16 => 611.4mm diameter
215/35/18 => 607.7mm diameter

So you've actually gone 0.6% smaller. See http://www.miata.net/garage/tirecalc.html


Yeah i know, ive used that site before.

Ideally id like 225/35/18 but 215s are cheaper and easier to get