08-24-2023, 12:50 PM | #376 |
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08-24-2023, 10:49 PM | #377 |
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I'm also quite surprised by the gigantic spacers. Couldn't they have built the offset into the wheel, or would that impact the load integrity? Maybe spacers allow more applications with the as designed offset? Or did they just decide it was cheaper to make only one wheel offset so a spacer that size is just required to make it work?
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08-25-2023, 08:43 AM | #378 | |
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08-25-2023, 12:33 PM | #379 | |
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Unless you absolutely need to be able to rotate tires, the squared offset isn’t most ideal as the massive front spacer is necessary. Ideally, fronts need their own width/offset package and so do the rears.
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10-23-2023, 06:36 AM | #380 | |
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10-23-2023, 09:03 AM | #381 |
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Will be interesting to see how the Nankangs wear also. I was paddocked next to Jackie Ding last weekend. He was in CRS and I was on RE71RS. His looked brand new and mine had a weekend on them. By the end of the weekend my tires were completely done and his were still in great condition. Different cars and he has a full spl setup where I was just camber plates up front and the rear was stock. Not apples to apples but I was very impressed with the condition of his tires by the end of the weekend. Going to try a set next myself.
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10-23-2023, 12:07 PM | #382 | |
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10-23-2023, 12:21 PM | #383 | |
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They were fast for a lap though. Haha. |
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11-05-2023, 05:37 AM | #384 |
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Anyone run a chunkier+wider set up? I’m fully stuck but haven’t loved the way the fronts have felt on track. Gonna add some camber as well up, probably just an extra deg nothing crazy.
I’m thinking about going from stock sizes to: Front - 255/40/19 Rear -275/40/19 |
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11-05-2023, 01:24 PM | #385 |
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I got four days out of my RE71RS.
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11-05-2023, 02:10 PM | #386 |
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Re71rs lasted 4 days 5x20 min sessions on 100-110 degree days without camber plates. Corded outside shoulder on penultimate run. Started loosing grip last run or 2. Inside shoulder was pristine.
New 71rs at 3 degree camber over 1.5 days, wear is mostly on outside edge of lateral 1/3 rib, not the shoulder. May need to air down more… running pressures 38-40 hot similar to without camber plates. Lot of hard corners, short straights maxing out at 128ish. Tends to give me 5-8 minutes of max pace before heating up and getting greasy. Considering cr-s, all the fast guy are running it and they tires never look that worn. Or I’m a ham fisted monkey at the wheel which is probably the answer |
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11-05-2023, 03:12 PM | #387 |
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11-05-2023, 03:16 PM | #388 | |
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11-05-2023, 07:46 PM | #389 |
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11-06-2023, 04:16 AM | #390 | |
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11-06-2023, 04:50 AM | #391 |
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For reference, I keep mine at 31-32 hot (well...as hot as I can keep them going from track to paddock then checking right away - no TPMS). I can feel a difference of 2-3 psi...definitely have less traction the higher it gets. I start low to mid 20s cold.
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11-06-2023, 09:55 AM | #392 |
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In my opinion no. My last set of rears were 295/30/18 and they felt fine. Probably the exact right tire for a track like Barber because of gearing. Allowed me to stay in 3rd and 4th the entire tack and had good acceleration and never came close to the rev limiter. But for a track like NCM a 295/35/18 would have been perfect. Was hitting the rev limiter sooner than I wanted at NCM, but too close to the end of the straight to make shifting gears worth it.
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11-07-2023, 09:04 AM | #393 |
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Thanks for advice. I agree temps and grip drop off quickly with higher pressures. with the camber plates I’m dropping my hot pressures slowly while keeping an eye on shoulder wear. I’ll see if I can get down to the low 30s. Without camber plates 34-35 hot caused high wear on shoulder tread of 71rs while setting my fastest time, 3.28 on 5 mile thunderhill.
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01-10-2024, 08:35 AM | #394 |
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Hi all - I'm looking for tire advice on the upcoming track season.
EC-7 19x9.5 and 19x10.5 with 255/275/35 RE-71RS or AD09 EC-7 19x9.5 and 19x10.5 with 265/275/35 Nankang CRS V2 VS-5RS 18x10 ET40 with a front spacer. 275/35 square. I would have to buy these wheels. Is it worth the $5k for the wheels, tires, spacers, and sensors to run square setup? My focus is consistently lapping with HPDE. It does not have to be the fastest tire (all thought that helps ); I want more consistency than melting my PS4S tires within 3 laps. Car is stock suspension with 3 degrees front camber. I would consider a larger front sway bar as well.
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01-10-2024, 09:37 AM | #395 |
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I'll give you two other options that I would choose between:
EC-7 19x9.5 and 19x10.5 with 255/285/35 RE-71RS EC-7 19x9.5 and 19x10.5 with 265/295/30 CR-S v2 You'll get more grip with those setups, vs a 275 square setup. The whole idea of a square setup as beneficial is overblown. If you're driving the car in a balanced manner and not self-inducing plowing or oversteer, the fronts & rears in staggered setup wear very similarly. And, as you alluded to, if you do want to run a neutral square setup on our cars, you have to modify the suspension. Plus, driving staggered setups on our cars is a lot of fun. It really teaches you how to be more aggressive with the throttle to help rotate the car, improving your car control. As for 71RS vs CR-S v2: 71RS has better wet/cold grip, ready to go after 2-laps, has a bit better feel. CR-S has more longevity but costs more so probably not real $/lap savings, and has better high temp tolerance which you may not have to worry about as much in OH. Lap time difference b/n the two tires are close enough that the driver in the box will make the difference! |
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01-10-2024, 09:44 AM | #396 | |
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Would the 30mm stagger be too much and result in a lot of understeering at the limit?
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