Spuds' Vroom Machine - Page 13 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Spuds · 05-18-2023, 06:59 PM

Ordered some Apex Arc8s in black with 35 offset this week, along with their valve stems. They are supposedly arriving Tuesday.

Now, tires. Options and thoughts below.

1. A052 in 245/40. Every review says this should be the fastest and have the best road manners. I'm pretty sure all the local competitive STX folks are on them. They are also the lightest option as a bonus. Notionally they don't handle heat well, are pretty expensive, and feel a bit numb. Supposedly does really well with more camber, and I can probably get close to 4° up front if I really wanted it.

2. RT660 in 245/40. Also reportedly very good in the dry, much sharper steering and last longer. Cheaper than other competitive options. But worse road manners, not as good wet, and nearly 20% more inertia that the equivalent A052. Tread width is list as 10" on TR, but I think that might be a mistake?

3. RT660 in 235/40. I thought this might be a sweet spot in terms of sizing for these and apparently everyone else thinks so too as it's nearly the same cost per tire as the A052. I just thought sub-9" tread width seemed appropriate for a 9" wheel considering recent test reports by TR

.

4. RT660 in 235/45. Cheapest size, but increases the rolling diameter an inch, which equates to 16% greater inertia of the tire. Does it matter, probably not, but I care lol.

5. RE71RS in 245/40. Also a very good tire, also expensive. New, but reviews place it high on the list, but less grippy than the other two. Does well in rain?

...

Edit: the more I look at it, the more I'm leaning towards the Bridgestones.

Clipdat · 05-19-2023, 01:53 AM

Yeah buddy!

NoHaveMSG · 05-19-2023, 10:18 AM

Quote:

Originally Posted by Spuds

2. RT660 in 245/40. Also reportedly very good in the dry, much sharper steering and last longer. Cheaper than other competitive options. But worse road manners, not as good wet, and nearly 20% more inertia that the equivalent A052. Tread width is list as 10" on TR, but I think that might be a mistake?

I still have my worn 660's mounted to my track wheels. I can check the width for you tomorrow.

I really don't think you can go wrong with any of those tires.

Spuds · 05-19-2023, 10:28 AM

Quote:

Originally Posted by NoHaveMSG

I still have my worn 660's mounted to my track wheels. I can check the width for you tomorrow.

I really don't think you can go wrong with any of those tires.

I think someone noted tread width on the 245s as 9.3" on some forum that I can't remember. Might have been GRM. Falken only says section width of 10" on the official spec sheet so

Yeah, I think I'm going to order the RE71RS in 245/40R17. Tire Rack has a few promotions/rebates that reduce the final installed price quite a bit, and I think it winds up less expensive than the falkens in the same size.

NoHaveMSG · 05-19-2023, 10:33 AM

Quote:

Originally Posted by Spuds

I think someone noted tread width on the 245s as 9.3" on some forum that I can't remember. Might have been GRM. Falken only says section width of 10" on the official spec sheet so

Yeah, I think I'm going to order the RE71RS in 245/40R17. Tire Rack has a few promotions/rebates that reduce the final installed price quite a bit, and I think it winds up less expensive than the falkens in the same size.

I was just commenting in the other thread that not all tires measure the same regardless of what the spec sheet says. I want to say I measured them before and they were pretty close to 245mm wide, I have a metric tape. I know 225 Hoosiers are wider than 245 street tires lol.

Spuds · 05-19-2023, 10:55 AM

Tires are ordered. Ouch, my wallet hurts lol.

blsfrs · 05-19-2023, 12:18 PM

FWIW: the stock TPS (from my 2013) won't work with the Arc8's even though their literature says they will.

Spuds · 05-19-2023, 12:47 PM

Quote:

Originally Posted by blsfrs

FWIW: the stock TPS (from my 2013) won't work with the Arc8's even though their literature says they will.

Good to know, thanks! I wasn't planning on running tpms on these.

Spuds · 05-19-2023, 11:18 PM

Alrighty, on to problem that I caused myself #234: Leaking double slip joints. Yes, I bought a used PTuning header with ceramic coating and it's of course leaking at the slip joints. I would be fine if they completely sealed when hot, but at least one doesn't, specifically at the bottom. I do really like the header design though. The internet has not offered particularly good solutions IMO.

My options:
A. Get a different header, this time without slip joints.
B. Get some slip fit band clamps and high temp putty.
C. Disassemble the headers and try to figure out what is going wrong.
D. Have someone else cut off the slip joints and attempt to weld new ones on or a solid pipe in their place (which is extra difficult because of the ceramic coating).
E: ??

I don't want to take them off/apart unless I have a good idea how I'm going to fix them...

Clipdat · 05-20-2023, 12:42 AM

Does PTuning themselves have any suggestions for fixing this?

Spuds · 05-20-2023, 10:29 AM

Quote:

Originally Posted by Clipdat

Does PTuning themselves have any suggestions for fixing this?

I called them a few months ago asking for the exhaust table they offered in this post back in the day, but they seemed distinctly uninterested in helping me unless I wanted to go get a dyno tune.

https://www.ft86club.com/forums/show...7&postcount=12

I haven't paid them anything so I'm not really a customer, but it kind of put me off from becoming one. Not really into calling again asking for free support on a product they don't sell anymore.

Spuds · 05-20-2023, 05:13 PM

Not quite taller than the car, but it's getting there...
Yes, I ordered these tires yesterday. TR is fast.

NoHaveMSG · 05-21-2023, 10:31 PM

Quote:

Originally Posted by Spuds

I called them a few months ago asking for the exhaust table they offered in this post back in the day, but they seemed distinctly uninterested in helping me unless I wanted to go get a dyno tune.

https://www.ft86club.com/forums/show...7&postcount=12

I haven't paid them anything so I'm not really a customer, but it kind of put me off from becoming one. Not really into calling again asking for free support on a product they don't sell anymore.

I’ve been unimpressed with PTuning. I had the gauge fail on my FF kit and sent it into them. Wasn’t really expecting anything but wanted to get it back to them to see if it was some kind of issue they weren’t aware of or possibly something I did. After they got it I called after a couple weeks and they were like “huh, what gauge?”

jflogerzi · 05-21-2023, 10:36 PM

JDL 4-2-1 EL is what I would replace them with and sell these

Sent from my Pixel 6 using Tapatalk

05-18-2023, 06:59 PM	#169
Spuds The Dictater Join Date: Apr 2017 Drives: '13 Red Scion FRS Location: MD, USA Posts: 9,464 Thanks: 26,213 Thanked 12,475 Times in 6,175 Posts Mentioned: 86 Post(s) Tagged: 0 Thread(s)	Ordered some Apex Arc8s in black with 35 offset this week, along with their valve stems. They are supposedly arriving Tuesday. Now, tires. Options and thoughts below. 1. A052 in 245/40. Every review says this should be the fastest and have the best road manners. I'm pretty sure all the local competitive STX folks are on them. They are also the lightest option as a bonus. Notionally they don't handle heat well, are pretty expensive, and feel a bit numb. Supposedly does really well with more camber, and I can probably get close to 4° up front if I really wanted it. 2. RT660 in 245/40. Also reportedly very good in the dry, much sharper steering and last longer. Cheaper than other competitive options. But worse road manners, not as good wet, and nearly 20% more inertia that the equivalent A052. Tread width is list as 10" on TR, but I think that might be a mistake? 3. RT660 in 235/40. I thought this might be a sweet spot in terms of sizing for these and apparently everyone else thinks so too as it's nearly the same cost per tire as the A052. I just thought sub-9" tread width seemed appropriate for a 9" wheel considering recent test reports by TR . 4. RT660 in 235/45. Cheapest size, but increases the rolling diameter an inch, which equates to 16% greater inertia of the tire. Does it matter, probably not, but I care lol. 5. RE71RS in 245/40. Also a very good tire, also expensive. New, but reviews place it high on the list, but less grippy than the other two. Does well in rain? ... Edit: the more I look at it, the more I'm leaning towards the Bridgestones. __________________ If a picture is worth a thousand words, a model is worth ten thousand pictures. Also: "Build Thread" Last edited by Spuds; 05-18-2023 at 08:47 PM.

05-19-2023, 10:55 AM	#174
Spuds The Dictater Join Date: Apr 2017 Drives: '13 Red Scion FRS Location: MD, USA Posts: 9,464 Thanks: 26,213 Thanked 12,475 Times in 6,175 Posts Mentioned: 86 Post(s) Tagged: 0 Thread(s)	Tires are ordered. Ouch, my wallet hurts lol. __________________ If a picture is worth a thousand words, a model is worth ten thousand pictures. Also: "Build Thread"

05-19-2023, 11:18 PM	#177
Spuds The Dictater Join Date: Apr 2017 Drives: '13 Red Scion FRS Location: MD, USA Posts: 9,464 Thanks: 26,213 Thanked 12,475 Times in 6,175 Posts Mentioned: 86 Post(s) Tagged: 0 Thread(s)	Alrighty, on to problem that I caused myself #234: Leaking double slip joints. Yes, I bought a used PTuning header with ceramic coating and it's of course leaking at the slip joints. I would be fine if they completely sealed when hot, but at least one doesn't, specifically at the bottom. I do really like the header design though. The internet has not offered particularly good solutions IMO. My options: A. Get a different header, this time without slip joints. B. Get some slip fit band clamps and high temp putty. C. Disassemble the headers and try to figure out what is going wrong. D. Have someone else cut off the slip joints and attempt to weld new ones on or a solid pipe in their place (which is extra difficult because of the ceramic coating). E: ?? I don't want to take them off/apart unless I have a good idea how I'm going to fix them... __________________ If a picture is worth a thousand words, a model is worth ten thousand pictures. Also: "Build Thread"

05-20-2023, 05:13 PM	#180
Spuds The Dictater Join Date: Apr 2017 Drives: '13 Red Scion FRS Location: MD, USA Posts: 9,464 Thanks: 26,213 Thanked 12,475 Times in 6,175 Posts Mentioned: 86 Post(s) Tagged: 0 Thread(s)	Not quite taller than the car, but it's getting there... Yes, I ordered these tires yesterday. TR is fast. Attached Images __________________ If a picture is worth a thousand words, a model is worth ten thousand pictures. Also: "Build Thread"

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05-19-2023, 12:18 PM	#175
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,155 Thanks: 1,821 Thanked 990 Times in 498 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	FWIW: the stock TPS (from my 2013) won't work with the Arc8's even though their literature says they will.

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