Wheels and Tires Discussion about wheels and tires for the S2000.
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Ap1 with ap2v1 wheels alignment

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Old 09-16-2021 | 03:58 PM
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Default Ap1 with ap2v1 wheels alignment

Just got new tires for my ap2v1. First week riding with the new tires and ap2v1 wheels with alignment. Got the alignment cause i smacked a curb with my other tire (ap1 wheel). But the handling feels really unsafe? Not sure if im not used to driving with bigger wheels or just the tires have to break in?
can anyone tell me if this alignment is pretty good? There are other forums on alignment but im a noobie when it comes to reading it.
side note: i did sanded down the ap2v1 wheels and repainted them.



Old 09-16-2021 | 04:20 PM
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A lot of rear toe..can see mine <04>below at 0.06,
Old 09-16-2021 | 05:34 PM
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Originally Posted by noodels
A lot of rear toe..can see mine <04>below at 0.06,
i dont know what <04> means. So it should be at 0.06 instead of 0.25?
Old 09-16-2021 | 05:38 PM
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Ive seen this post.

Ive seen this post. So should i take it back to the shop?
Old 09-16-2021 | 05:47 PM
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Theres also this which i dont really understand what it means


Old 09-16-2021 | 07:17 PM
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Yeah, you can throw all those references right out the window...
Especially the one that specs 0.5 degrees for rear toe in, with an acceptable range from -1 to +1, WTF?!!!!

You have way too much rear toe-in. AP1 handles super-weird and nonlinearly with a lot of rear toe, particularly over bumps and undulations. And rear tire wear is *abysmal*! Also, turn-in responsiveness is garbage. Too much rear toe is literally lose/lose/lose proposition. I recommend no more than about 0.3 degrees *total* rear toe in (0.15 degrees per side), as a *maximum*. I ran mine at 0.15 to 0.20 degrees *total* (or half that per side).

Zero front toe is fine.

Your camber is kinda minimal, which is fine, but you could run a lot more front and rear if you want more lateral grip capability. Camber within reason won't hurt drivability or feel and won't hurt tire life either. -1.5 front camber with -2 rear would be fine for a street-only car.
Old 09-17-2021 | 04:31 AM
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Bigger wheels? The car doesn't know they're on the car since the outside diameter of the tires is identical to what you had -- same revolutions per mile, etc. Your alignment should have taken care of tire width, etc.

What are the new tires? How old were the old tires? I suspect any difference in feel are the result of these.

-- Chuck
Old 09-17-2021 | 05:18 AM
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Originally Posted by Chuck S
Bigger wheels? The car doesn't know they're on the car since the outside diameter of the tires is identical to what you had -- same revolutions per mile, etc. Your alignment should have taken care of tire width, etc.

What are the new tires? How old were the old tires? I suspect any difference in feel are the result of these.

-- Chuck
yeah i recently just got new tires last week. They are continential dws. The old tires were on the ap1 same brand. Front had like 60%, rears were almost bald. And i just switched from ap1 wheels to ap2v1 wheels last week as well. But when i get to higher speeds or even in cornering it feels unsafe and very twitchy. Like the steering is almost too responsive. Feels like a boat in the corners.
Old 09-17-2021 | 07:08 AM
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Originally Posted by jchau123
yeah i recently just got new tires last week. They are continential dws. The old tires were on the ap1 same brand. Front had like 60%, rears were almost bald. And i just switched from ap1 wheels to ap2v1 wheels last week as well. But when i get to higher speeds or even in cornering it feels unsafe and very twitchy. Like the steering is almost too responsive. Feels like a boat in the corners.
Exactly what too much rear toe will do for you! Twitchy and unstable in a straight line, but doesn't wanna turn in and will tend to push mid-corner when driving hard. Also, ridic rear wear rate. The factory spec is already *way* too high, and for years people have repeated the totally incorrect idea that "more rear toe = more stable" which is B.S. Particularly with the AP1, too much rear toe-in makes this car handle wonkily.

0.48 degrees is too much rear toe-in. Needs to be cut in half at least. I'd go 0.2 degrees total (0.1 degrees per side).

That said new full-tread-depth tires (particularly squishy all-seasons) may be exacerbating the effect.
Old 09-17-2021 | 07:30 AM
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Originally Posted by ZDan
Exactly what too much rear toe will do for you! Twitchy and unstable in a straight line, but doesn't wanna turn in and will tend to push mid-corner when driving hard. Also, ridic rear wear rate. The factory spec is already *way* too high, and for years people have repeated the totally incorrect idea that "more rear toe = more stable" which is B.S. Particularly with the AP1, too much rear toe-in makes this car handle wonkily.

0.48 degrees is too much rear toe-in. Needs to be cut in half at least. I'd go 0.2 degrees total (0.1 degrees per side).

That said new full-tread-depth tires (particularly squishy all-seasons) may be exacerbating the effect.
So i should just change the rear toe? Everything else looked good? (Camber and caster). I am on stock height i believe.

Edit: just called the alignment place and they said it could be the cause of a different issue (not alignment) and to change the rear toe they would charge me again (98$ usd) because they said they reset it to factory spec. They also said the rear toe has nothing to do with handling just the wear on the tires or something along those lines.



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