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Old 09-14-2018, 06:39 AM   #1
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I'm not familiar with BSX setup. I say 18s to start because RE71s fit stock size. If you go with a square or squarish setup, 17s may be the way to go.
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Old 09-14-2018, 07:30 AM   #2
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Originally Posted by BrantyB View Post
I'm not familiar with BSX setup. I say 18s to start because RE71s fit stock size. If you go with a square or squarish setup, 17s may be the way to go.
BSX is pretty much Spec Boxster set up while remaining street legal. Since my car isn't eligible as a Spec Boxster, I could be flexible with the modifications. I was using the Spec Boxster build as a guideline.

I'll consider the RE71R if I come across some nice 18s at a good price. What do you think the comparable 17 tires are?

Also, do you recommend going for the GT3 LCA before I take it to my first HPDE? Or do you think my tires would be okay for a little while if I just max out the negative camber on the stock set up? The LCAs are a little pricey, but I can justify the cost later on if it saves me money on tires.
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Old 09-14-2018, 09:31 AM   #3
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You may find a size for RE71s that'll work on stock 17's. But stock 17" front is 205 v 225 for 18s. Some people run a square 17" setup but I think to balance the car properly you'd need some sway bar changes too. Another really good AutoX tire is the Rival S 1.5. (not a lot of size options), And the new Azenis RT615+ seem like a good value. www.WillTheyFit.com is a good resource for comparing different size wheels and tires.

You should be able to find some used OEM 18s for $500+/-

As for the GT3 LCAs, they make a big difference but at a sizable cost. I autoX'd 3 times without them and looked at the shoulder wear then pulled the trigger. I'm sure you'd be fine for a while without them. But start saving and searching for a set to pop up.

Hope my $0.02 helps.
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Last edited by BrantyB; 09-14-2018 at 09:33 AM.
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Old 09-15-2018, 03:50 PM   #4
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Originally Posted by BrantyB View Post
You may find a size for RE71s that'll work on stock 17's. But stock 17" front is 205 v 225 for 18s. Some people run a square 17" setup but I think to balance the car properly you'd need some sway bar changes too. Another really good AutoX tire is the Rival S 1.5. (not a lot of size options), And the new Azenis RT615+ seem like a good value. www.WillTheyFit.com is a good resource for comparing different size wheels and tires.

You should be able to find some used OEM 18s for $500+/-

As for the GT3 LCAs, they make a big difference but at a sizable cost. I autoX'd 3 times without them and looked at the shoulder wear then pulled the trigger. I'm sure you'd be fine for a while without them. But start saving and searching for a set to pop up.

Hope my $0.02 helps.
I run 225 fronts on 18" 205 rims. Works like a champ and has the added advantage of making the stock setup less staggered. It helps reduce understeering. After I switched to this setup the main issue is not enough negative camber, especially on track, but also on AX. Since camber has nothing to do with rims and tires that's my next point of attack.
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Old 09-15-2018, 11:48 AM   #5
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Originally Posted by phook View Post
Also, do you recommend going for the GT3 LCA before I take it to my first HPDE?
No, GT-3 LCA's are definitely not required. It will typically take a little time for you to learn to drive at the limit to the extent that you'll need the GT3 LCA's. The obvious sign that you need more camber is when the outside 1/3 of the tire is done and the inside 1/3 of the tire still looks fine.


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Or do you think my tires would be okay for a little while if I just max out the negative camber on the stock set up?
Yes, this will help turn in and cornering grip and the stock adjustment is small enough that it won't negatively affect tire wear on the street too badly.


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The LCAs are a little pricey, but I can justify the cost later on if it saves me money on tires.
Eventually, it will be a tradeoff: maximizing corner performance vs track tire wear vs street tire wear.

Unfortunately there isn't any free lunch so you'll have to find the best compromise for your driving objectives (both on and off track) and budget.
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Last edited by thstone; 09-15-2018 at 11:50 AM.
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