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Old 03-02-2015, 03:56 PM   #1
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Default squeezing on 275/35/15's for autox

I'm planning to run this weekend's Blytheville Prosolo in SSM with my Miata Snoball. We cut the fenders and flared them, but the 15x10 Jongbloed's with 275/35/15 Hoosiers appear to rub on a ridge on the firewall, rear most area of the wheel well. We have tried both 5mm & 10mm spacers.

Do I just beat that back with a BFH (big friggin hammer) or am I missing something?



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Old 03-02-2015, 04:38 PM   #2
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How much caster?
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Old 03-02-2015, 04:48 PM   #3
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I think both the front and rear adjusters are maxed for camber, so caster isn't maxed.
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Old 03-02-2015, 07:12 PM   #4
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It actually looks like the crease where the wires come out of hitting. The ride height is closer to 4", so I'll raise it.
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Old 03-02-2015, 08:17 PM   #5
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You need more back spacing, not less. A spacer is just making it worse.
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Old 03-02-2015, 08:20 PM   #6
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There were two offsets available for the 15x10. 15 and 36 I believe.

You probably have the 15, and Miatas need the 36.
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Old 03-02-2015, 08:35 PM   #7
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Quote:
Originally Posted by M.Adamovits View Post
There were two offsets available for the 15x10. 15 and <s>36</s> 25 I believe.

You probably have the 15, and Miatas need the <s>36</s> 25.
You really need +19ish. +19 is like perfect for the 15x10 and 275s, so the +25 juanlongdong with a 5-6mm spacer should be goldilocks. Gets you far enough away from the shock mount area but not so close to the fire wall with the inside wheel in a turn. I think the +15s should still work, they might rub once you hammer that thing over near full lock but I doubt they would on course. When I was ******* around with fitment I got my +19s with 13mm of spacer to the point where it would definitely hit the firewall while on course.
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Old 03-03-2015, 01:45 PM   #8
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^ yep ~20mm offset works. no room to diviate eather way by more than ~5mm.
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Old 03-03-2015, 08:11 PM   #9
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^ yep ~20mm offset works. no room to diviate eather way by more than ~5mm.
Unless you make room.
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Old 03-03-2015, 08:14 PM   #10
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Quote:
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Unless you make room.
But you cant make that room in street mod. lower offset requires moving the firewall a lot more than you can with a hammer, and higher offset just runs into parts of the chassis we cant cut.
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Old 03-03-2015, 08:39 PM   #11
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Quote:
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But you cant make that room in street mod. lower offset requires moving the firewall a lot more than you can with a hammer, and higher offset just runs into parts of the chassis we cant cut.
All I hear is blah blah wrong class blah blah wrong class
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Old 03-04-2015, 12:49 AM   #12
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All I hear is blah blah wrong class blah blah wrong class
I'm going XP next year.
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