275 tires and 18x11 vs 18x10 wheel fitment on stock shocks

[Shift9303]

Well finally got the wheels and tires mounted.

Random thoughts:

Ended up getting CRS in 275/40/18 to save a bit of cash Over RE71RZ in 295/35/18. I'm still learning the car, not looking to put down PBs just yet.

I knew CRS run wide but I was still surprised how wide these are. Makes MPSS look so smol. Barely looks stretched on an 18x11.

Though I do have the HKS springs for clearance I can't help but feed my flush boi cravings. Tried a 12.5 mm spacer first but ended up not feeling comfortable with the amount of poke.

Then tried 8 mm spacer which looked more acceptable and at least has cleared during regular street driving. Adding camber with the top hats hopefully will give me a touch more margin.

As it sits now the car feels pretty neutral. OEM springs and OEM stagger felt ever so slightly pushy. Car turns in well but when getting on throttle I can feel the front wanting to wash out. HKS springs stiffen the front comparatively more than the rear and the wheel rates are almost square. On OEM stagger tires the HKS springs made the car push even more. Not the worst thing ever but I can tell that the front does not want to load up on braking and turn in, even just on street driving. Other wise I'm pleasantly surprised by how well they ride. They're not overly harsh at all. Best way I would describe it is that comfort feels like sport and sport feels like sport+. On comfort you can tell the shock is underdamped when you hit pot holes though. Now with nonstagger tires the stiffer front springs are counter balanced andd the care feels pretty neutral. I feel less motivated to get a stiffer front sway bar now but will need to feel the car out more. Though, I think body roll reduction would still be nice with the extra grip. Are there any "meddium" stiffness front sway bars? Concerned that the EIbach even on soft might be more than I'd like.

Also, CRS are extremely quite for a 200 TW tire. MPSS are so fucking noisy. Ironic part is that now that the car has less road noise I have noticed it has a very subtle dash rattle, lol. Oh well....

Pic with 8 mm front spacer and 12.5 mm rear.

Edit: BTW anyone have recs on wheel studs? Not too impressed with Motorsports Hardware stuff. The threads were very coarse and had many burs and chips in them. I had to re-cut the threads with a die for them to thread smoothly. I feel like I can feel the threads stretching, I know they're supposed to but it's a bit disconcerting when it's this noticeable. Looking for something more premium in the future but won't hit the bank like MSI, lol. Or are all of the common ones pretty much (except MSI) OEM by the same factory?

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[Mad0zodi]

Woohoo!!! I hope you're able to get on track soon...you must be itching to something fierce!

 

[Shift9303]

Woohoo!!! I hope you're able to get on track soon...you must be itching to something fierce!

I am however my work schedule might screw me over. Might not get to run until June. But I suppose it's ok, still need to bleed the brakes and mull over whether or not I want a front sway bar.

 

[razorlab]

Also, CRS are extremely quite for a 200 TW tire. MPSS are so fucking noisy. Ironic part is that now that the car has less road noise I have noticed it has a very subtle dash rattle, lol. Oh well....



Edit: BTW anyone have recs on wheel studs? Not too impressed with Motorsports Hardware stuff. The threads were very coarse and had many burs and chips in them. I had to re-cut the threads with a die for them to thread smoothly. I feel like I can feel the threads stretching, I know they're supposed to but it's a bit disconcerting when it's this noticeable. Looking for something more premium in the future but won't hit the bank like MSI, lol. Or are all of the common ones pretty much (except MSI) OEM by the same factory?

Yea CRS have great street manners for their capability. Just don't get caught in heavy rain or it will slap you around and never buy you dinner.

The Motorsports Hardware stuff is trash. If you don't want to shell out for MSI, I have used the Bimmerworld premium studs with good results. 1000% better quality than the MH trash.

https://www.bimmerworld.com/BimmerWorld-Black-82mm-Race-Premium-M14x125-Wheel-Stud-Package.html

 

[Shift9303]

Yea CRS have great street manners for their capability. Just don't get caught in heavy rain or it will slap you around and never buy you dinner.

The Motorsports Hardware stuff is trash. If you don't want to shell out for MSI, I have used the Bimmerworld premium studs with good results. 1000% better quality than the MH trash.

https://www.bimmerworld.com/BimmerWorld-Black-82mm-Race-Premium-M14x125-Wheel-Stud-Package.html

Thanks for the tip, wish it had a hex at the nose and didn't require the jam nut method but won't argue with the price. Prob will grab a 92 mm set over winter.


TBH I really like how the car feels right now. Pretty dang neutral, enough that I can "steer" with the throttle in long sweepers on the highway. Not as much as the S2000 but that thing is its own beast and has bump steer for days.

 

[Subydude]

For wheel studs, I bought the Apex ones when they were on sale last year. They've held up just fine for the 20 or so wheel changes the car has seen since then along with 6 track days.

I also found the 275 square to be pretty lively, both on stock tune and with the MHD stage 1 tune. Still very easy to drive though and definitely increases the speed of the car on track quite a bit.

 

[Subydude]

How did you like the staggered RZ setup?

I liked it a lot and felt like it calmed the car down for mid-corner throttle application.

I did a full write up of my test day here: https://www.supramkv.com/threads/ra...formation-exchange.16389/page-295#post-556913

The important bit (assuming you don't want to read about the other stuff) is below:

The RZ's were 275/35/18 front and 295/35/18. It was surprisingly good and didn't get pushy until the front axle heat saturated. After the front was hot I had to dial back some, but it was still fine to drive. I would prefer a square 295 setup, but the class I run in requires stock shocks with stock spring perches which means staggered is still faster than square 275's IMO as the failure mode is more understeer vs more oversteer. I did like the shorter sidewall up front with the taller out back vs the square setup in terms of feel.

Vid of the fast lap at VIR during the test day:

 

[razorlab]

For wheel studs, I bought the Apex ones when they were on sale last year. They've held up just fine for the 20 or so wheel changes the car has seen since then along with 6 track days.

Apex ones are the same as the Motorsport Hardware.

 

[Subydude]

Apex ones are the same as the Motorsport Hardware.

They may come from the same place (what doesn't these days?), but are a bit different since they use an allen socket to tighten them down vs the motorsports hardware that uses a double nut. Either way, mine didn't have burrs on them and the threads were fine. Other than cleaning them of any oil and then applying my own loctite, they installed fine and obviously are working fine. Single data point and all.

I will say, their recommendation for using the 90 mm for spacers over 12 mm is a bit off. Even with the 15mm spacer I still have plenty of stud sticking out of the wheel.

 

[razorlab]

They may come from the same place (what doesn't these days?), but are a bit different since they use an allen socket to tighten them down vs the motorsports hardware that uses a double nut. Either way, mine didn't have burrs on them and the threads were fine. Other than cleaning them of any oil and then applying my own loctite, they installed fine and obviously are working fine. Single data point and all.

I will say, their recommendation for using the 90 mm for spacers over 12 mm is a bit off. Even with the 15mm spacer I still have plenty of stud sticking out of the wheel.

Motorsports hardware has a hex as well. Same studs, and the same studs you can find on ebay/alibaba/temu. All the same. I went through a couple sets until I moved to Bimmerworld premium and MSI and have since had no issues. Knock on wood.

Not sure what some of you have against the double nut method as you barely use any torque to install them in the hubs. Meanwhile you torque them down to 100 lb/ft+ when putting wheels on.

MH:

Apex:

 

[Mad0zodi]

I liked it a lot and felt like it calmed the car down for mid-corner throttle application.

I did a full write up of my test day here: https://www.supramkv.com/threads/ra...formation-exchange.16389/page-295#post-556913

The important bit (assuming you don't want to read about the other stuff) is below:

Thanks for the info. The more I think about it, the more I feel like I'm so far away from being able to maximize whatever coilovers provide, that I'm better off sticking to the stock dampers and just getting Suspension Secrets camber plates, with SPL front LCAs and rear toe links. Once I'm comfortable with those mods, I'll entertain wheels and tires...most likely the staggered Apex 19 setup with Conti ECFs, since the Supra will really only ever be a summer non-daily/occasional lap-days car...my days of chasing lap times and competing are far behind me.

 

[Subydude]

Thanks for the info. The more I think about it, the more I feel like I'm so far away from being able to maximize whatever coilovers provide, that I'm better off sticking to the stock dampers and just getting Suspension Secrets camber plates, with SPL front LCAs and rear toe links. Once I'm comfortable with those mods, I'll entertain wheels and tires...most likely the staggered Apex 19 setup with Conti ECFs, since the Supra will really only ever be a summer non-daily/occasional lap-days car...my days of chasing lap times and competing are far behind me.

I really enjoy the stock shocks for what they are. My setup is just Verus camber plates, H&R lowering springs, and a front bar. Everything else suspension wise is stock regarding arms and links. That setup is good for -3.6 ish front and -2.5 rear while hitting the toe I want. It hasn't slipped since torquing the bolts to their factory spec either. I think you'd be very happy with the plates and a staggered wheel setup as camber really brings the car to life.

 

[Mad0zodi]

I am however my work schedule might screw me over. Might not get to run until June. But I suppose it's ok, still need to bleed the brakes and mull over whether or not I want a front sway bar.

Damn work schedules! My buddy and are hoping to hit Hedge Hollow next month...that's gonna hurt the CC/bank account for sure. But it'll finally give me reason to get rid of the MPSSes!

 

[Mad0zodi]

I really enjoy the stock shocks for what they are. My setup is just Verus camber plates, H&R lowering springs, and a front bar. Everything else suspension wise is stock regarding arms and links. That setup is good for -3.6 ish front and -2.5 rear while hitting the toe I want. It hasn't slipped since torquing the bolts to their factory spec either. I think you'd be very happy with the plates and a staggered wheel setup as camber really brings the car to life.

My code brown moments at OIR - one corner in particular - a few weeks ago are what have me considering the arms and links. LOL

 

[Shift9303]

I really enjoy the stock shocks for what they are. My setup is just Verus camber plates, H&R lowering springs, and a front bar. Everything else suspension wise is stock regarding arms and links. That setup is good for -3.6 ish front and -2.5 rear while hitting the toe I want. It hasn't slipped since torquing the bolts to their factory spec either. I think you'd be very happy with the plates and a staggered wheel setup as camber really brings the car to life.

How are you getting -3.6 front with Verus camber plates and oem shock? Most resources I've read state that past -2.7 the roller bearing top hat boot starts binding against the reinforcement ribs of the strut tower. Do you have lower control arms?

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