04-14-2017, 05:33 PM | #4593 |
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Thanks for the info, Ordered my 2017 this morning
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The Following User Says Thank You to 1slowbrz For This Useful Post: | justinco (04-14-2017) |
04-18-2017, 09:53 PM | #4594 |
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Seems like the new 86 armed with TRD parts, with extra torque and wider TRD wheels (=wider tires) might be able to give the ND Miata a run for it's money this year. CS is getting interesting.
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The Following User Says Thank You to DaWorstPlaya For This Useful Post: | smg1138 (04-20-2017) |
04-18-2017, 10:30 PM | #4595 | |
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I want to see someone in a fully prepped and well driven 124 Abarth and/or 986 Boxster s. I think those cars could pose a threat more than a 2017 86. The local Fiat dealer only had a base version in automatic a couple weeks ago, not that I'm going to make a switch. |
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04-20-2017, 02:29 PM | #4596 |
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Agreed, the later Boxster might be a challenger in CS. The specs on it look very decent.
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06-05-2017, 02:15 PM | #4597 |
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So I was in the D Street thread and saw that people there were running pressures as low as 26 up front.
I can't run below 37 up front without rolling over and I have the crash bolts installed. Do shocks/springs gain you any camber up front? Or am I having an issue with understeering because my pressures are too high and that's causing more rollover? I'm running the 235/45/17 Re-71r on 17x7.5s. |
06-05-2017, 02:42 PM | #4598 | |
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I would guess your pressures are still too high at 37f. On my 225 Bridgestones, I would run ~31f, 26-29r with 17x7 rims. I ran higher (32-34) when I used 235/45 Hankooks and I run low-mid 20s on 225 Kumhos. Pressures are tire dependent as what works for Bridgestones is not the same as BFG, Nexen, Kumho, Hankook, etc. and also not the same size-to-size and would also adjust depending on temperature. The camber bolts get you the extra camber, and the best I could do was -1.5L and -1.1R up front with the bolts. I think the best I've heard on a legal CS/DS car is -1.7 in camber up front. The springs/shocks won't get you any or much more negative camber. |
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The Following User Says Thank You to Biggins For This Useful Post: | strat61caster (06-05-2017) |
06-05-2017, 05:35 PM | #4599 | |
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Chalk lead me to a similar place on RE71R's (totally different size and chassis, but still relevent imo) and I ran 40 psi once, I've also run as high as 38 psi on my STX car. While that leads to good chalk wear and a tire that feels impervious and composed (and a bit fun to dance on), you're sacrificing a ton of grip and they're happier down lower. Ditch the chalk, go by feel, drop 2 psi every run, all the way down to 26 (or hell, lower) and see what feels best and fastest bump back up to wherever it was. I've made the mistake of not doing that too many times but it's the only way imo you'll find a happy spot on a tire. |
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06-05-2017, 05:36 PM | #4600 | |
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When I was in CS spec last year I ran 29 front and 27 rear on Bridgestones. In DS spec this year I run 31 front and 29 rear on Rivals. I got to those by measuring temperatures for dozens of runs on multiple surfaces across the inside, center, and outside of the tires. When you are trying to dial in your pressures it's important to remember that every setup is different (like Biggins said) and that any recommendation you get from people is just a starting point. You absolutely have to adjust your settings and find your own. Guess I got lucky with my current FR-S. -1.7 on both fronts but only -0.9 on both rears. Koni Yellows w/ centering washers + crash bolts.
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06-05-2017, 05:41 PM | #4601 |
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I reckon I hit the jackpot with -1.9/-1.8 in the front and -1/-1.1 in the rear. Also Koni Yellows w/ centering washers + crash bolts. When I first saw the alignment sheet I was worried that I must've installed the centering washer incorrectly to have achieved that much camber. Went outside and checked it, installed properly! #stancelyfe
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06-05-2017, 09:29 PM | #4602 |
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Has anyone ever run 225/50/16 RE71Rs on a 16x7.5?
It'd be CS legal on the 2017 cars (being that a 17x7.5 is a stock option). For now I'm running the factory 17x7s, but I'll upgrade when I burn through these tires. My initial thought would be that they may be a bit floppier than the 17s, but the recommended rim width is lower for the 225 16s than the 17s, which to me seems to suggest the sidewall may be a tad stiffer. The combo would be about 1 lbs lighter a corner than running 17x7.5 RPF1s with 225 tires. The lightest 16x7.5 wheel on tire rack with 225/50/16 RE71Rs runs under $900 a set. Barely over half the cost of the 17s. Awfully tempting if the performance is a wash. |
06-05-2017, 10:01 PM | #4603 | |
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06-05-2017, 10:58 PM | #4604 | |
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I'm more worried about rollover than responsiveness. If I wind up having to over-inflate the crap out of them to not be driving on the sidewall, they're not gonna work too well. |
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06-06-2017, 08:46 AM | #4605 | ||
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06-06-2017, 10:27 AM | #4606 | |
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And yes I was using chalk, but I was understeering a ton into one turn like an idiot so maybe that was the issue. What are everyone's take on the TRD springs? I have them in my living room but I still haven't had a chance to measure and make sure I wont hit speed bumps with them on, are they worth it?
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