03-13-2020, 01:17 PM | #29 |
Drives: 2017 SS 1LE Join Date: Mar 2016
Location: Monterey, CA
Posts: 2,480
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Has anyone considered that a set of 305/325 G3s on ZL1 1LE spec wheels could be a better setup than the 305 RE71Rs??? I for one would not be surprised if it turns out to be the case, and would be an easy choice for ZL1 1LE guys (and even us SS 1LE peasants with some slight modification lol).
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03-13-2020, 02:00 PM | #30 | |
Drives: 2013 C6Z06 Join Date: Nov 2016
Location: PA
Posts: 1,577
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03-13-2020, 03:01 PM | #31 |
Drives: 2016 2SS BLK A8 Vert Join Date: Dec 2017
Location: MA
Posts: 1,029
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Make that two...
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NPP, MRC, Tinted side & rear reflectors, OEM ZL1 Rockers / 3rd Brake / Darken tail lights, OEM Blk rear splash guards, Satin hood wrap, Fuse pull, Sound tube delete, Cat delete, Ported 95 TB, Ported MSD IM, Dry RotoFab, ARH 1 7/8 headers, E85, "Performance Dyno" Tune, BMR "pieces", "Track" alignment, Hawk DCT-70/70's w/SRF, Goodridge lines, Ti shims, Red powdered calipers, 18" APEX SM-10's w/ Pirelli DH's, FE4 Vert swaybars, Brake cooling ducts, ATI 10% UD, Vorshlag camber plates, OEM 1LE Splitter w/APR Ext., Velossa BIG MOUTH Ram Air, CF QA1, ZLE brakes(F)
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03-13-2020, 03:51 PM | #32 |
Drives: Honda S2000 Join Date: May 2019
Location: SC
Posts: 133
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I have a 2018 SS 1le and bought 19x10 19x11 I was looking for tires to autox , track days , and drive on the wheels to events. The re71 were so much more expensive than the stock 220tw supercar 3 plus the only 305/30 325/30/19 combo was the supercar 3 so I went with those on my 19s... So far they have much more grip than the sup3 on the stock 20s... Possible still a little slower than re71s bit hope to last longer for track days.
Eric |
03-13-2020, 03:54 PM | #33 | |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
Posts: 5,091
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Ps to the previous post, i would not run 305 on a 10 size rim. Maybe some folks dont mind it, but i do. |
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03-13-2020, 03:59 PM | #34 |
Drives: Honda S2000 Join Date: May 2019
Location: SC
Posts: 133
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Pics
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03-13-2020, 04:05 PM | #35 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
Posts: 5,091
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The F sidewall doesnt look very healthy to me in the top pic. 10.5 is a min authorized size for a 305. And id never run it for this reason alone (never mind less F end response). But that's me
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03-13-2020, 04:17 PM | #36 |
Drives: Honda S2000 Join Date: May 2019
Location: SC
Posts: 133
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What do you mean by "healthy"? I do agree that they do have a slower response, and have a sidewall bulge. But the proof is in the pudding as I got 3rd pax and 4th raw out of 85 at my first autox with them. On the stock 20s I would be 5th to 8th usually raw and pax.
My 2nd pic is with the stock 20s for comparison |
03-13-2020, 04:26 PM | #37 | |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
Posts: 5,091
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03-13-2020, 07:03 PM | #38 | ||
Drives: '19 RivrsdBlu 1LE ('17 1LE HB sold) Join Date: Nov 2016
Location: Seattle
Posts: 1,686
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As far as I can tell, the RE71Rs (and now the Yokohoma A052s) is the fastest street tires with 200tw . Like RealJA stated above the difference shouldn't be much though (definitely not 2 seconds), on the same size tires and wheels. I tried to love RE71Rs and tried them on both S2000 and Miata but couldn't I thought the overheating them wouldn't be an issue on a very light car with only 160hp since OEM tire size was 205s and I was using 245s (like the S2000), I was wrong lol .. they're not really worth the money IMO
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03-13-2020, 07:35 PM | #39 | ||
Drives: E46 S54 race car, 964C2 Join Date: Feb 2017
Location: Southern Indiana
Posts: 912
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03-14-2020, 12:24 PM | #40 | ||
Drives: '19 RivrsdBlu 1LE ('17 1LE HB sold) Join Date: Nov 2016
Location: Seattle
Posts: 1,686
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In addition to that, by using the same offset front and back, you'd be changing the rear track dramatically (from +43 offset to say +20 offset ..that's like a whopping 23mm extension on each side in the rear). On my previous 1LE, I actually remember using +25mm offset in the rear since Apex didn't have a correct offset back then, I always suspected that the that wheel setup was responsible for the added understeer. With OEM wheel/tire setup car had a better balance but less overall grip due to OEM tires, so I said to myself "pick your poison" In the video you shared above, I can swear the car sounds like it begs for more rubber. I am willing to bet you if you had more rubber, especially on a track like this where a sustained g is important on long sweepers, it can help you. The fact that you ended up getting better lap times with RE71Rs (even narrower tires in the back) tells me they're simply better compound than the OEM tires. I am pretty sure if you had 305sq or 295/315 you'd be even faster. BTW, is this the same track that TrackClub shared which the guy did 2:15.6 on stock car (with probably OEM alignment)? The title reads as Pro Racer so 1 second difference is pretty negligible on a long track like this I bet but he's on OEM tires too. Regardless, great driving and thanks for sharing info
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03-14-2020, 01:06 PM | #41 | |
Drives: E46 S54 race car, 964C2 Join Date: Feb 2017
Location: Southern Indiana
Posts: 912
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The Pro Racer in the video is Andy Pilgrim, who is a past factory Corvette racer and has been on the podium 5x @ the LeMans 24 hour. He is employed by NCM. |
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03-14-2020, 03:11 PM | #42 |
Drives: 2017 SS 1LE Join Date: Mar 2016
Location: Monterey, CA
Posts: 2,480
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Unless your goal is literally stuffing as much tire as possible under the car I think the 305 square on 19x10.5" wheels is simply the best setup for an SS 1LE. It completely gets rid of the slight understeer tendency of the stock setup, has better high speed stability thanks to the wider rear track width and the added bonus of being able to rotate front/rear. It's really a no brainer!!!
Like I said in my previous reply, I wouldn't be surprised if G3s in ZL1 1LE sizes (aka 305/325/19") ended up being faster than the 305 square RE71Rs. BUT after putting a bunch of track miles on the exact same setup Provoste used for most of his events last year (305 square RS4s on the 19x10.5" wheels) I can say the I much prefer the way the car drives with that setup! For the TT guys the RE71Rs make sense, because as of now they are the undisputed "Hero Lap" king and that's what TT is all about. But the 305/325 G3s might give them a good run in the right hands!!!
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