27.5” front skinny, 29” rear . Any issues down the track
 

Any body these size tires on the 1/4 mile track. Any issues with the diameter sizes. Want to know before I order some tires.

According to website skinny is 27,8” and rear is 28.8” so 3.48% diameter difference?

I have mainly seen people say no more than half an inch difference otherwise it sets ABS but I don't know the limits

I am 3% different on my street tires and zero issues.

I'm running 27" in the front and 28" in the back and the computer was not a fan. Had to pull the fuses.

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Any issues racing down the track with fuses pulled?

It just turns off traction control and stability. You Just won't have abs, braking wasn't much different at all.

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I pulled fuses on mine spun just a hair on the launch and it knocked the rev limiter down to 5000 I was waiting for my shift light at 6200.... put them back and problem solved. I would prefer to have them pulled so I don’t have to disable traction control plus I liked the steering better. Idk how to fix that problem though

When I pulled fuses I could no longer do a burnout. Best to match tire sizes and not create new issues.

I haven't experienced anything like that. Shift light came on for me at the usual 6200 and she kept moving.

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I think the biggest difference people go is 3%. 285/35/20 and 315/35/20. You might be okay with your selections. Might. You a gambler?

Tune out traction control for the drag strip. I ran 315/35/17 25" rears and stock fronts. Fuses pulled zero issues. Mine was a 2015

Have no clue why mine did what it did only if I spun a little bit. I don’t spin much when I launch. I wonder if you just disconnect the sensors if that would work better...???? No idea

I have been racing with the fuses pulled for a couple years. Heck my ABS has not even worked for the last year I think we broke a sensor.

But 27 front and 29 rear will will most likely trigger ABS.

I run the 28" Mickey radials up front with 29x11.5x15 qtps on the rear without tripping the abs light . When I put the 29.5x10.5 radials on it will trip the abs service lights etc. I only use the radials at the track when the fuses are pulled.

think the 2 options I might go with are (MT ET front tire 27.5"x4-17 with MT ET Street S/S 305/40r18) OR (M&H skinny radial 4.5/28r/17 and MT ET Street"R" 305/45r.18) this way I keep everything under or near the 3% difference

The only problem is that when service stabailitrac comes on, it disables power steering for the later model years that have EPS (electronic power steering) unless there is another way around it.

How do you do that?

I personally like that disabled for racing. It’s less touchy... might just be me but I like it. I wish I could do that permanently for racing. When I pulled the abs fuses though like I said earlier I couldn’t rev over 5k

When you say that you couldn't rev past 5k, is that just in neutral or while going through the gears?

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While going through gears.

Wow that would be a real problem for me. If you don't want electric power steering to work while racing you could unplug the EPS module which is pretty easy to get to.

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I’ll have to try to find that.
I don’t like having to turn off traction control either I tried to have the shop tune the abs and stabilatrack to be off as default but they said that they were not able to do that because it’s part of the body control module.

I've been racing with the fuses pulled for couple years. My car even with both turned off would still have the ABS 'pulse' on me during the burnouts, and in 1st gear during a pass.

What's the point in running with the fuses pulled if you have equal tire height all the way around?

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5% is the maw difference with the rear being larger. Go larger in the front and the computers get very unhappy.

Well decided my route. Ordered Mickey Thompson ET Street “R” 305/45/18 rears and the new M&H radial front runner 4.5/28r-17

I have exact same setup and it does trip abs for me. Had to pull fuses. and I mean we have the EXACT same setup.

Really it should not as it is under the 3% mark. I have run DR in rear with street tires in front around the same % and never trip abs. Weird. Guess I will find out this summer. If does then I will go to a bias set up and closer % range.

It may just be my car because the person I bought them from ran them on a 5th gen with no issues. I think it is because the mickey is really a 28.8 tire and the mh is right under 28 depending on air pressure. Might not like the 17s and 18s mismatch either.

Well my skinnies showed up except they are not the radials DOT. They sent me the same size except a bais ply DOT. Oh well might just run them anyways.

I've Heard nothing but good things about those. I have seen people hate the radial. Just curious, what's the weight rating on the bias plys you got?

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I honestly don't know however I have a friend that has them on his ZL1 pushing over 900rhwp and running high 140mph in the 1/4 mile with no issues and has radials in the back too.
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Information I found on the front tires. "M&H bias ply front runner in 28x4.5-17 size has a load rating of 1325lbs" which is more then a lot of other front runners.

Attachment 931229

So weight them , fronts weight is at 36.8 lbs and rears weight in at 59 lbs

Car is now all set up and ready to go. Hopefully test them in a month or so
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waiting on test results. curious to see if your abs trips like mine did with same setup.

Did some hard pulls down the Hwy once I installed my gauges and zero issues with my abs. Hoping to get out to the track this coming up Friday or next one.

im gonna shoot my computer then. stupid ***** keeping me from going fast!!!!

Can you tell me what tire pressures you were running? and to confirm you are 305/45/18 28.8 tall, and 4.5/28/17 28 tall in the front?