Track forum general chit chat.

[tsk94]

Originally Posted by k_mann

Cool I'll reach out to them about the hats! Do you know if arc-8's clear the caliper? Not sure if that design works with them

Bimmerworld can source the rings too. Apparently, they are the same as the ones from the M235/240iR. Don't know if the price is any better though

[MaX PL]

Crosspost from F80 side but I want your opinions as well:

Here is the new VS-5RS et40 @ -3.5 camber with 20mm spacer. I spun the wheel around a few times and didn't notice rubbing. Is this acceptable? Not much room on the 94mm stud if I was to add another 5mm to the spacer. 6" spring with MCS suspension.








The car also sits way high. What should I have done to correct this?

[Davisca455]

Originally Posted by Richneerd

Someone showing off here.

No sir, not intended.
Lots of folks here are much quicker than that.

[tsk94]

Originally Posted by MaX PL

Crosspost from F80 side but I want your opinions as well:

Here is the new VS-5RS et40 @ -3.5 camber with 20mm spacer. I spun the wheel around a few times and didn't notice rubbing. Is this acceptable? Not much room on the 94mm stud if I was to add another 5mm to the spacer. 6" spring with MCS suspension.








The car also sits way high. What should I have done to correct this?

Clearance, in my opinion, is fine. I ran that clearance on an E92 for 2 seasons with 0 issues.

That's... very high. What size tire is that? Regardless it's high, but maybe that's a super small diameter tire like a 285/30R18?

[MaX PL]

You're correct. That's exactly the tire size.

So you say clearance is fine? Great. I'll likely swap to 5" springs in the future after some post purchase research, but for now I'd like to run this.

What could be done about that gap, if anything, or is it entirely tire related?

[tsk94]

I would be comfortable running that clearance (since I have for ~40 track days). Others may feel differently, but I've experienced no problems myself.

Tire size certainly does play a role. Those are ~1.3" smaller then OEM size for reference. But, it almost seems like the struts are too long for adequate lowering. You don't have much adjustment left to go much lower, and it's still so high (at least visually). What's your center of wheel to fender measurement with where it's at now?

[omgzirra_exe]

Originally Posted by tsk94

Clearance, in my opinion, is fine. I ran that clearance on an E92 for 2 seasons with 0 issues.

That's... very high. What size tire is that? Regardless it's high, but maybe that's a super small diameter tire like a 285/30R18?

im in agree here YOU CAN if you want a 25mm spacer instead for ease of mind.

but you are okay!

[MaX PL]

Thanks to you both. I'd run the 25mm but my studs won't allow it on the 94mm stud. I tried adding another 5mm spacer to the 20mm on in the photos and the entire nut did not fit the stud.

Other issue is sourcing 25mm spacers...

[911r]

Originally Posted by stevejin

Just wanted to introduce myself here since I'll be lurking on (hopefully contributing to) this thread a lot more frequently. I'll probably make a separate thread/journal in the near future, but for now I'm hoping this is the right place to ask a question regarding tires.

Some background information:

I finally transitioned from my dedicated track car of 6-7 years (S2000) on to the E90. I lost my S2000 during the middle of last year here in the Northeast from Hurricane Ida, and decided to give my E90 a try for the next couple of years until I find a replacement track car. My main goal with the car is to be able to "arrive and drive," but I don't mind swapping on to a second set of wheels/tires at the track.

So far, I've taken the E90 to 7 events last season (NJMP, Watkins Glen, Lime Rock, and Pocono). I started out with 275/35/18 RS4s, then got a set of RE71Rs in same sizing through TireRack's closeout sale to see how the car would perform with grippier tires. So far, the car's been pretty fun to drive on track.

The car had mild modifications last season:
- Dinan front sway bars (came with the car), Swift lowering springs on stock EDC shocks, Vorshlag camber plates
- Stock calipers with track pads (Hawk DTC)
- 18x10 +25 wheels

For this season, I changed the following:
- Vorshlag to Ground Control -- I was only able to squeeze out -3.2º with the Vorshlag plates, and I'd like to squeeze out a bit more and Ground Control plates seem to be able to do that
- OEM front calipers to AP Racing 9660 with Ferodo 3.12 pads
- 18x10 +25 wheels to 18x10.5 +22 wheels

I'll be using RS4s for most of the events, but at the same time I'd like to see how much I can squeeze out of my current setup with tires that have decent pace in the advanced/instructor run groups from time to time. If any of the E9X track junkies here has been running any "cheater" 200TW and 100TW tires like the A052s, CR-1/CR-S, AR-1s, or any similar tires on the E9X, would you be able to share your thoughts? What would you say about their general longevity (how many sessions/days)? I have experience running AR-1s, RC-1s, and NT01s on the S2000 and other lighter cars, but don't have any experience running them on this chassis.

Also, if anyone could PM me the link to the Discord server, I'd greatly appreciate it. I'd love to join in on the fun.

Apologies for the long introductory post.

I was able to get -3.6 from Vorshlags on my JRZs. Wonder why you're only able to squeeze out -3.2. Good list of mods though.

[DRLane]

Originally Posted by MaX PL

Thanks to you both. I'd run the 25mm but my studs won't allow it on the 94mm stud. I tried adding another 5mm spacer to the 20mm on in the photos and the entire nut did not fit the stud.

Other issue is sourcing 25mm spacers...

I run 25mm spacers on 90mm studs with 18"x11" et 40 on the front of my e92 on JRZs with 5" sprint. Zero issues.

H&R is an easy source, otherwise there are a couple lightweight versions.

[stevejin]

Originally Posted by 911r

I was able to get -3.6 from Vorshlags on my JRZs. Wonder why you're only able to squeeze out -3.2. Good list of mods though.

Thanks 911r! I probably would've been able to squeeze another tenth or two-tenths more, but it was getting a bit too close to the shock tower. I was thinking it was primarily due to the limitations of running lowering springs (Swifts) instead of coilovers.

[Adrian g.]

Originally Posted by MaX PL

Thanks to you both. I'd run the 25mm but my studs won't allow it on the 94mm stud. I tried adding another 5mm spacer to the 20mm on in the photos and the entire nut did not fit the stud.

Other issue is sourcing 25mm spacers...

Clearance looks ok, as long as it is 3mm or more.

As far as height, I ran a 5" front spring with a helper and could get the front end very low with MCS 3WR. This should also give you more clearance to the tire.

[///Mobbin]

@MaX PL I have run similar spacing in the past, I think I even have some similar photos up on the f8x slicks thread, I would keep in mind that the tire is going to move and squish some when under load. Not saying you should/shouldn't run like that but I'd try to at least eyeball it for rubbing after a hot lap or two at each track.

[omgzirra_exe]

Originally Posted by MaX PL

Thanks to you both. I'd run the 25mm but my studs won't allow it on the 94mm stud. I tried adding another 5mm spacer to the 20mm on in the photos and the entire nut did not fit the stud.

Other issue is sourcing 25mm spacers...

you should be able to use 25m spacers on the 94mm stud, you can get some light weight ones from motorsporthardware.

also, not sure on what length of spring you went with, since that depends on your rate also. so hard to say how to adjust your height.

[k_mann]

Anyone owned an isf? Was looking for a F8x to replace my daily but I remember loving the idea of the isf, seem like a good daily that shouldn't tank much in value. Also considered the rs5 and c63, but rs5 support is spotty and the c63 hasn't aged well

[OG Shark]

I have a Garmin Catalyst that has never been used (let alone taken out of the box). 800.00 including shipping to the lower 48 if anyone is interested.

And sold...

[omgzirra_exe]

Originally Posted by k_mann

Anyone owned an isf? Was looking for a F8x to replace my daily but I remember loving the idea of the isf, seem like a good daily that shouldn't tank much in value. Also considered the rs5 and c63, but rs5 support is spotty and the c63 hasn't aged well

love love the iSF! just get the updated 2011 models with LSD!

[///Mobbin]

New v8 Lexus last remaining v8 sedan? Feel like I need one.

[Richneerd]

Originally Posted by Davisca455

No sir, not intended.
Lots of folks here are much quicker than that.

Lol I know, just kidding with you 👍. I’m like sub 2:00

[k_mann]

Originally Posted by omgzirra_exe

love love the iSF! just get the updated 2011 models with LSD!

Yep that's what I was considering! There's a one owner 2011 for sale right now. I think it's $40k with 67k. Owners trump mileage for me. I think I just need to stomach practicality/value prop over new tech to do it

[omgzirra_exe]

Originally Posted by k_mann

Yep that's what I was considering! There's a one owner 2011 for sale right now. I think it's $40k with 67k. Owners trump mileage for me. I think I just need to stomach practicality/value prop over new tech to do it

lucky for you the F formula hasnt changed, of all the F Specs i think the IS-F holds the most value, could just get is IS500 F and be disappointed too LOL

[Kelse92]

Having driven the Lexus product line, the isf is a great choice. But don’t look past the new is500, it’s a great car too. I guess it depends if the car is daily only or if you ever want to track it? If you want to do track stuff on occasion rcf has the bigger brakes which matter on these heavier cars. If you want to buy one, just go do one of the Lexus performance driving events and try them all out