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Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack Specific topics relating to wheels and tires.


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Old 12-31-2018, 05:10 PM   #15
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What lugs do you recommend for the t66f and our cars?


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TWS also make the TRD SF2 wheels so I went with the TRD lug nuts.

https://www.japanparts.com/parts/detail/41909
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Old 12-31-2018, 08:10 PM   #16
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Doesn't matter if they are hubcentric or not. Make sure you torque down the lugs properly in a star pattern and it'll line up properly. TWS never intended to make a 17" option for the BRZ/FR-S. We did make a short run of our CSG Spec TWS T66-F 17" wheels and made them with a 56.1mm hubcenter.
Sorry to threadjack a bit here: Why didn't they intend to make a 17" option?

I'm interested in the 18x9 or 18x9.5 given the relatively similar weight compared to the "average" lightweight 17" wheel. Is it their preferred diameter for this platform?
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Old 01-02-2019, 07:09 AM   #17
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Sorry to threadjack a bit here: Why didn't they intend to make a 17" option?

I'm interested in the 18x9 or 18x9.5 given the relatively similar weight compared to the "average" lightweight 17" wheel. Is it their preferred diameter for this platform?
I wonder the same too. Im guessing 16 and 18 are ideal race sizes because:
16 - almost smallest that will clear stock brakes, lightest possible.
18s - big enough to clear most BBKs.

17 was probably chosen as a good in-between for DD and Performance which was really what the car in stock form is marketed for?
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Old 01-02-2019, 08:12 AM   #18
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There are other 5x100 TWS T66F 17". Maybe not hubcentric of 56.1mm, but ones that can be used on twins due PCD, for example these or these or here alongside mentioned CSG run. From where that "didn't intend to make 17" " comes?
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Old 01-02-2019, 02:38 PM   #19
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Quote:
Originally Posted by mistople View Post
Sorry to threadjack a bit here: Why didn't they intend to make a 17" option?

I'm interested in the 18x9 or 18x9.5 given the relatively similar weight compared to the "average" lightweight 17" wheel. Is it their preferred diameter for this platform?
There are some politics involved with this. The movement towards 18" tires was the primary driving force and thus the 17" wheel was mostly avoided to reduce overall "inventory" of product. Based on what we've actually tested, the 18" wheels they produce are very very competitive. Many racecars adopting the TWS T66-F are doing very well in Super GT.

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I wonder the same too. Im guessing 16 and 18 are ideal race sizes because:
16 - almost smallest that will clear stock brakes, lightest possible.
18s - big enough to clear most BBKs.

17 was probably chosen as a good in-between for DD and Performance which was really what the car in stock form is marketed for?
17" is the most economical for most drivers. 18" is what enthusiasts like.
16" is what Gazoo Racing 86/BRZ drivers use and what the gravel/rally 86s are using. After seeing these at Fuji Speedway, we're convinced they are leaving a ton of time on the table, but to be fair, the sponsored tires of the series are focused on those specific sizes only.


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There are other 5x100 TWS T66F 17". Maybe not hubcentric of 56.1mm, but ones that can be used on twins due PCD, for example these or these or here alongside mentioned CSG run. From where that "didn't intend to make 17" " comes?
TWS Forged T66-F standard offering can be found here on our website:

18" T66-F Wheels
https://www.counterspacegarage.com/t...ed-t66f-18inch

17" T66-F Wheels
https://www.counterspacegarage.com/t...ed-t66f-17inch

16" T66-F Wheels
https://www.counterspacegarage.com/t...ed-t66f-16inch

15" T66-F Wheels
https://www.counterspacegarage.com/t...ed-t66f-15inch

The major difference with the 17x9 +40 setup compared to our 17x9 +37 is fairly drastic. We worked with their engineering team to ensure appropriate BBK fitment and strength properties. With less than 1lb additional weight, we were able to get a 35% increased load rating. As a result, some of our sales actually came from those switching over from the other 9" width T66-F wheel to our spec. The difference in how the tires are utilized is a little difference and the weight difference was effectively negligible due to the added consistency in grip application.
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Old 01-02-2019, 03:25 PM   #20
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Thanks for the detailed explanation above.

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17" is the most economical for most drivers. 18" is what enthusiasts like
I'm still trying to wrap my head around the difference in performance when going from something like a 17x9 TC105N to a 18x9 T66. Would it be fair to say that assuming the same tire width and similar net weight, the 18 would result in superior handling?

I always thought moving to an 18" wheel was had a negative effect on handling so I'm just trying to clarify the differences.
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Old 01-02-2019, 06:05 PM   #21
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Thanks for the detailed explanation above.



I'm still trying to wrap my head around the difference in performance when going from something like a 17x9 TC105N to a 18x9 T66. Would it be fair to say that assuming the same tire width and similar net weight, the 18 would result in superior handling?

I always thought moving to an 18" wheel was had a negative effect on handling so I'm just trying to clarify the differences.
Depends on the exact application and your budget. We have data on these setups on stock, NA, lightweight, boosted, big aero, small aero, etc with various types of tire compounds of different widths and diameters.
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Old 01-02-2019, 06:46 PM   #22
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Quote:
Originally Posted by leevanf View Post
I wonder the same too. Im guessing 16 and 18 are ideal race sizes because:
16 - almost smallest that will clear stock brakes, lightest possible.
18s - big enough to clear most BBKs.

17 was probably chosen as a good in-between for DD and Performance which was really what the car in stock form is marketed for?
Yes. That's the idea.
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Old 01-02-2019, 11:53 PM   #23
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Originally Posted by CounterSpace Garage View Post
Depends on the exact application and your budget. We have data on these setups on stock, NA, lightweight, boosted, big aero, small aero, etc with various types of tire compounds of different widths and diameters.
In that case I'll send you guys a note sometime soon with some questions & goals!
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Old 01-03-2019, 12:41 AM   #24
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Depends on the exact application and your budget. We have data on these setups on stock, NA, lightweight, boosted, big aero, small aero, etc with various types of tire compounds of different widths and diameters.


Ok, heres a big question.

Will the 4lb/corner weightloss on 18x8s balance out the poorer ride quality of less rubber?

Because im guessing if I get lighter 18s and thinner rubber, chances are, ride quality will be the same as 17s, and the main benefit wont be in ride qual but just in the accel/decel/breaking aspect?


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Old 01-03-2019, 08:27 AM   #25
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Originally Posted by leevanf View Post
Ok, heres a big question.

Will the 4lb/corner weightloss on 18x8s balance out the poorer ride quality of less rubber?

Because im guessing if I get lighter 18s and thinner rubber, chances are, ride quality will be the same as 17s, and the main benefit wont be in ride qual but just in the accel/decel/breaking aspect?


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You're going the wrong direction if one of your primary concerns is improving ride quality. You can't get around the mechanics of thinner sidewall when it comes to tolerating stuff like potholes and just generally crap roads.
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Old 01-03-2019, 11:22 AM   #26
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.. There are a plethora of options available including our CSG Spec chromoly lug nuts.
Recall you having once also ultra light aluminium csg-spec ones .. will those ever be back in stock?
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Old 01-03-2019, 12:51 PM   #27
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Originally Posted by leevanf View Post
Ok, heres a big question.

Will the 4lb/corner weightloss on 18x8s balance out the poorer ride quality of less rubber?

Because im guessing if I get lighter 18s and thinner rubber, chances are, ride quality will be the same as 17s, and the main benefit wont be in ride qual but just in the accel/decel/breaking aspect?


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on 18s the rubber is also most likely going to be stiffer as well as thinner. 17's are really the sweet spot for this car as far as weight, tire thickness, looks ect. I wouldn't go 18's unless I was FI with a BBK.


Ive considered 16 tws but it also a high offset wheel so its going to look very tucked, performance only would be very good though on a light NA car
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Old 01-03-2019, 01:36 PM   #28
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Originally Posted by leevanf View Post
Ok, heres a big question.

Will the 4lb/corner weightloss on 18x8s balance out the poorer ride quality of less rubber?

Because im guessing if I get lighter 18s and thinner rubber, chances are, ride quality will be the same as 17s, and the main benefit wont be in ride qual but just in the accel/decel/breaking aspect?


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You will find more comfort with a set of dampers that are actually valved properly to soak in the imperfections. The OEM wheels with a softer sidewall tire will actually be very good as well.


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Recall you having once also ultra light aluminium csg-spec ones .. will those ever be back in stock?
The CSG Spec high load wheels were beefed up considerably to get more strength out of the wheels. Their engineers thought we were using them
for offroading or rallying. The reality is, berms are big and dirt drops are intense on our courses so we value strength and resilience over weight. The total weight, however, was still lower than your standard "lightweight" wheel though.
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