Official Meaty fitment / Functional thread

Nix said:
235/40 all seasons would get my vote. Nothing really performs well as a summer and winter tire. The rubber compounds are too different to handle the temperature extremes to do well in either. An all-season will give you ok performance in any condition. There are some high end all seasons out there that would probably be just fine though.

2 sets of wheels and 2 sets of tires is the way to go if you still have your stock wheels.
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I have the stock rims, is this a good size to get since my stock tires are bald af now


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mazda_lexus said:
I have the stock rims, is this a good size to get since my stock tires are bald af now


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Yeah. 225/45 or 235/40 are both options if you want a little wider tire.
 
webby said:
Yeah. 225/45 or 235/40 are both options if you want a little wider tire.
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Yeah I want wider before I go lower later..better grip I suppose ? I wish I knew more about tires and wheels lol


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Well stock was 215 wide on the 2012 si.
215/45-17

The first number “215” is the width in millimeters.

215mm or like 8.47 inches wide.
225mm is 8.86 inches wide
235mm is 9.25 inches wide

So going from a 215 tire to a 235 is roughly 3/4” wider in total. Since the tire will center on the rim, you’re essentially 3/8” wider on the inside and 3/8” wider on outside towards the fender.

You can look at comparisons on sites like
https://tiresize.com/comparison/

It’ll let you put in the stock size, and then other sizes to compare widths and diameter. The diameter is the big thing to keep a look at so that the new tires don’t mess up your speedometer reading. A tire too tall or short will make your speedo inaccurate. Those sizes mentioned in my last post would work for you though.
 
webby said:
Well stock was 215 wide on the 2012 si.
215/45-17

The first number “215” is the width in millimeters.

215mm or like 8.47 inches wide.
225mm is 8.86 inches wide
235mm is 9.25 inches wide

So going from a 215 tire to a 235 is roughly 3/4” wider in total. Since the tire will center on the rim, you’re essentially 3/8” wider on the inside and 3/8” wider on outside towards the fender.

You can look at comparisons on sites like
https://tiresize.com/comparison/

It’ll let you put in the stock size, and then other sizes to compare widths and diameter. The diameter is the big thing to keep a look at so that the new tires don’t mess up your speedometer reading. A tire too tall or short will make your speedo inaccurate. Those sizes mentioned in my last post would work for you though.
Click to expand...

You’re the best


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I've been doing a lot of thinking about going to a meaty setup for DD, and wanted opinion/guidance about fit. I've got all-seasons on the OE wheels (18x7.5 +47), and some new Conti Extreme Sports on Konig Inception 18x8 +40 wheels for summer/autocross. Both tire sets are 225/40-18.

I like how the Konigs sit more flush than the OE wheels, but want a much lighter wheel and go to 17" for a little more sidewall, for DD.

I like the Konig Rennform and Ultraform, from what I've seen; and wonder how a 17x8 +45 would look wrapped in 245/40-17 Conti DWS 06s. I'm thinking these wheels would fall between the OEs and the Inceptions in "flushness", but feel the meaty tire could use the room. I know these will be very slightly shorter overall than the 18s, but I'm not concerned about the difference. Wanting 245/40 over 225/45 for more rubber on the road, and know that's the max a 17x8 can handle safely.

I'm on Swift Spec-Rs, and have the SPC rear camber arms installed.

Thought, opinion, guidance from those that have walked this path already?
 
dwmilton said:
I've been doing a lot of thinking about going to a meaty setup for DD, and wanted opinion/guidance about fit. I've got all-seasons on the OE wheels (18x7.5 +47), and some new Conti Extreme Sports on Konig Inception 18x8 +40 wheels for summer/autocross. Both tire sets are 225/40-18.

I like how the Konigs sit more flush than the OE wheels, but want a much lighter wheel and go to 17" for a little more sidewall, for DD.

I like the Konig Rennform and Ultraform, from what I've seen; and wonder how a 17x8 +45 would look wrapped in 245/40-17 Conti DWS 06s. I'm thinking these wheels would fall between the OEs and the Inceptions in "flushness", but feel the meaty tire could use the room. I know these will be very slightly shorter overall than the 18s, but I'm not concerned about the difference. Wanting 245/40 over 225/45 for more rubber on the road, and know that's the max a 17x8 can handle safely.

I'm on Swift Spec-Rs, and have the SPC rear camber arms installed.

Thought, opinion, guidance from those that have walked this path already?
Click to expand...

235/40/17 will be best for that setup. I've had all sorts of setups on my car, from 215's all the way to 255's. 235 is the happy middle ground.
 
Straight MEAT!
22500109_255969064928437_1267315686498107392_n.jpg
 
Safe Gabe said:
235/40/17 will be best for that setup. I've had all sorts of setups on my car, from 215's all the way to 255's. 235 is the happy middle ground.
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Gabe, with that said, would +45 or +35 offset work best on a 17x8” wheel?
 
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dpetro1 said:
Either should work fine. 235/40 is smaller than stock so you get a little more clearance.

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Thanks for that! I’m wondering how the +35 will look...I want close to flush, but no poke, hellaflush, or whatever.
 
dwmilton said:
Gabe, with that said, would +45 or +35 offset work best on a 17x8” wheel?
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dwmilton said:
Thanks for that! I’m wondering how the +35 will look...I want close to flush, but no poke, hellaflush, or whatever.
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Here's my car with a 17x8 +35 with a 235/40/17:
13960910913_81a08128d7_b.jpg


Only had remove the upper most fender tab of the front fender liner. No drama in the rear.
 
Thanks very much guys! Y’all really help me zero in on what fits the look I want!

How much are the cars lowered in those photos? I’m only dropped like 1.2” front, and 1” rear (Swift springs).
 
dwmilton said:
Thanks very much guys! Y’all really help me zero in on what fits the look I want!

How much are the cars lowered in those photos? I’m only dropped like 1.2” front, and 1” rear (Swift springs).
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you'd be closer to the white sedan pictured above
 
Has anyone got a picture of say.....a +20 offset on a coupe? I've got some...ideas. I know I'll have to run flares, so I'm ok with that. Just having a hard time finding pics
 
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