offset help needed!!!

Sun Jan 02, 2011 5:49 pm

Hi guys, I have just fitting my mazda 4 pots and even with 3mm spacer we have rubbage!.

Im thinking of changing the wheels and I understand nothing bout offset.

Can someone tell me what offset wheels I need to look for?

Thanx

Sun Jan 02, 2011 6:15 pm

I had a similar problem and I used a 12mm spacer to clear the caliper. Standard offset is 24mm so 24 +12 = 36mm - does that sound right?

Sun Jan 02, 2011 9:51 pm

So are standard e30 wheel at an offset of 24mm? i think I would need about 30 - 32mm ish. hmmm...

or should I just get some hubcentric spacers?

Sun Jan 02, 2011 10:38 pm

turk wrote:So are standard e30 wheel at an offset of 24mm? i think I would need about 30 - 32mm ish. hmmm...

or should I just get some hubcentric spacers?

When I used a 12mm spacer the tyre was outside the arch on 205/55/15s. If you use a 30mm spacer your going to be way outside unless the arch is rolled.

Ideally you need a spacer to move the wheel away from the caliper then a wheel with more offset so it goes back under the wheel arch. Or bin the Mazda parts and contact KeriWMS on here.

Mon Jan 03, 2011 2:09 am

DHFiS wrote:I had a similar problem and I used a 12mm spacer to clear the caliper. Standard offset is 24mm so 24 +12 = 36mm - does that sound right?

Would make it 12mm as you are reducing the offset

Mon Jan 03, 2011 2:30 am

turk wrote:So are standard e30 wheel at an offset of 24mm? i think I would need about 30 - 32mm ish. hmmm...

or should I just get some hubcentric spacers?

The 7" wheels have that offset. If I remember aright, standard wheels (6") have an offset of 35 and the optional 6.5" wheel is 30.

Mon Jan 03, 2011 8:10 am

so if I had some 7.0x17" 4x100 ET38 sized wheels would that solve my issue?

Mon Jan 03, 2011 10:13 am

the exel file shows the differences from the norm...

http://www.e30zone.net/e30zonewiki/inde ... calculator

Mon Jan 03, 2011 10:30 am

These should do it right?

http://cgi.ebay.co.uk/20MM-Hubcentric-W ... 43a3295a5b

Thu Jan 06, 2011 3:51 pm

15mm spacer would look better IMO, that would make the wheels ET23

Fri Jan 07, 2011 11:10 pm

The size of the spacers depends not only on the offset, but on the shaping of the rim itself. 7x15 BMW Cross Spokes will fit with the mentioned spacers, size 15mm. I've tried MIM Cross Spokes as well. Same size, quite similar design. They don't fit with the the mazda caliper.

A 7x17 with 215/40/17 will surely fit with an effective offset up to 15.