04-09-2022, 03:15 PM | #1 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
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Mcikey's ET Street R - Vibration/wobbling
Made a few hits today and these tires vibrated like crazy over the last 1/8.
Anyone experienced this problem? They had 20#.
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'20 ZL1LE A10.
LME 390, E2650, FBO. 1116/967. 15" conversion/Weld/MT ET Street R 325/50R15. 100 octane: 1.35/9.25/151 at 3500 ft. (only one pass so far). 100% meth/100 octane: Alky Twin 10+10 MAF; No dyno or ET. |
04-09-2022, 03:25 PM | #2 |
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Yes. They are impossible to balance, and even if you do they are still hit or miss. The last 17" set I had vibrated bad at 90mph. They are notoriously bad balance wise.
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04-09-2022, 03:37 PM | #3 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
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I agree they are unraceable. What are my options? Toyo or Nitto?
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'20 ZL1LE A10.
LME 390, E2650, FBO. 1116/967. 15" conversion/Weld/MT ET Street R 325/50R15. 100 octane: 1.35/9.25/151 at 3500 ft. (only one pass so far). 100% meth/100 octane: Alky Twin 10+10 MAF; No dyno or ET. |
04-09-2022, 09:33 PM | #4 |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,710
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Are you sure they’re not slipping on the rim?
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22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28 dragpack - 11.68@122
16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
04-09-2022, 09:39 PM | #5 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
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Beadlock or no? If you so need to go over the beadlock flange about 4 times to make sure all the ninety zillion bolts are all correctly torqued. Then road force balance the complete wheel & tire setup. Most people I spoke with thought it was overkill but it worked out perfectly.
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15 conversion 1059 WHP/944 WTQ, 9.48@150
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04-09-2022, 10:27 PM | #6 | |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
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I don't believe so, it's an F14 bead lock. Should have marked them.
Quote:
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'20 ZL1LE A10.
LME 390, E2650, FBO. 1116/967. 15" conversion/Weld/MT ET Street R 325/50R15. 100 octane: 1.35/9.25/151 at 3500 ft. (only one pass so far). 100% meth/100 octane: Alky Twin 10+10 MAF; No dyno or ET. Last edited by JSH; 04-10-2022 at 08:48 AM. |
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04-10-2022, 05:20 AM | #7 |
Drives: 6th gen Join Date: Aug 2013
Location: US
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I am running those tires and had no issue to 140
I would put them back on a road force as mentioned. Mine were road force balanced at a Firestone I am surprised you want to jump ship so quickly they are one of the fastest radials. I love them drive 50 min to the track and feel excellent on a launch and on street
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22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28 dragpack - 11.68@122
16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
04-10-2022, 05:40 AM | #8 |
Drives: 2024 Toyota Camry XSE Join Date: Sep 2017
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Ditto on the (nearly) impossible to balance M/T's. I've returned 3 of them in the past three years. Frustrated me, the tire guys, spent hours chasing vibrations that, every time, ended up being the tires. Currently running the Hoosier DBR 28"X10.5"X17R. Love it! And, it is 8 lbs. lighter; each tire. It is a racing slick and not a drag radial DOT. My only complaint is Hoosier does not make a 28" X 10" or 10.5" X 17" street drag radial DOT. They make 26" but not 28". Turned best 60', best 1/8, best 1/4 and best MPH on this tire. Of course there were other circumstances like some really good air, but traction and a smooth trip were not an issue. Had to add an engine diaper for one track, but that was no biggie.
Road raced motorcycles for 20 years and balanced hundreds of tires. M/C tires come with a marker indicating the lightest spot on the tire. The tire is mounted with the spot at the valve stem which places the heaviest spot on the tire opposite the valve stem (heaviest spot on the wheel). You never wanted the heaviest spot on the wheel and the heaviest spot on the tire adjacent for obvious reasons. Car tires don't come that way. Carrying that procedure to car race wheels and tires, I always get the wheels balanced naked and put the weights right in the center of the wheel and mark or tape them. Those weights never come off so the wheel is always balanced. Then, mount and balance the tires. In theory, "heavy" wheel locations and heavy tire locations will never match up. Overkill? Maybe, but I overkill everything anyway.
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2016 1SS - Bought: 8/2017 Sold: 12/2023
Last edited by Yosh6; 04-27-2022 at 06:20 AM. |
04-10-2022, 06:31 AM | #9 | |
Drives: 2017 Camaro 1SS Join Date: Aug 2016
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Quote:
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04-10-2022, 07:36 AM | #10 | |
Drives: 6th gen Join Date: Aug 2013
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Quote:
King says the same about MT balancing. I may have gotten lucky
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22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28 dragpack - 11.68@122
16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
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04-10-2022, 08:52 AM | #11 |
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 3,813
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I'll walk around the pits next week to see what other street cars are running. I saw a bunch of MT, Toyo, and Nitto yesterday
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'20 ZL1LE A10.
LME 390, E2650, FBO. 1116/967. 15" conversion/Weld/MT ET Street R 325/50R15. 100 octane: 1.35/9.25/151 at 3500 ft. (only one pass so far). 100% meth/100 octane: Alky Twin 10+10 MAF; No dyno or ET. |
04-10-2022, 08:59 AM | #12 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
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Yup...myself and others have had nothing but problems getting Mickey DR's to balance properly. Back when tires were plentiful it wasn't "AS" big of a deal to return MT's until you got a good set. With tire shortages you might waste half the season screwing around with that.
I would try the Hoosier DR2 for a "street legal" track tire. Back in the day over on LS1tech guys were having much better luck with them and they are much lighter. For a drag radial used primarily on the street, I don't think you can beat a Nitto 555r2. Edit* Looks like Hoosier doesn't offer the 305/45/17 that many like to run. Be nice if they would off more size options.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
04-10-2022, 11:26 AM | #13 | |
Drives: '20 ZLE Join Date: Jun 2020
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MT's traction is fine, but I can't live with the shakes.
I need a drag radial primarily for the track, and occasional road use. No errands. Also, these big ass 305 Michelin fronts caused the car wander around going down the track. I'm not interested in real skinnies, but maybe narrower fronts, like say, 275/35/19 Quote:
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'20 ZL1LE A10.
LME 390, E2650, FBO. 1116/967. 15" conversion/Weld/MT ET Street R 325/50R15. 100 octane: 1.35/9.25/151 at 3500 ft. (only one pass so far). 100% meth/100 octane: Alky Twin 10+10 MAF; No dyno or ET. Last edited by JSH; 04-10-2022 at 11:37 AM. |
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04-10-2022, 02:45 PM | #14 |
Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,710
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I’ve only used them with fr245 rear275
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22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28 dragpack - 11.68@122
16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
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