ET Streets R Bias Ply & Stock 19s up front....

I want to run bias rears, but I'm worried about having 750rwhp and no skinnies up front.

GTBOB said:

Yeah, that much plug gap will cause misfiring for sure. Go for .045 for gas. .040 if running E85.

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So since I mainly run e85 I should probably regap? would it make a difference for me?

I exclusively run E85. The tighter gap helped my car "gain" low rpm response. When I did run 93 octane, I always felt that the throttle response was slightly better with it. Maybe because gasoline just ignites a little easier.

GTBOB said:

I exclusively run E85. The tighter gap helped my car "gain" low rpm response. When I did run 93 octane, I always felt that the throttle response was slightly better with it. Maybe because gasoline just ignites a little easier.

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You using stock plugs still? I may order a new set and regap all of them, no sense in going through trouble of pulling individually out the oem ones without just putting new plugs lol

Yeah, still stock. A different heat range is really only good for forced induction set-ups.

I have the Mickeys you're talking about as well but have skinnies up front. Haven't ran them down the track but I've drove it on the street. The sway isn't that bad. its definitely different feeling but for going in a straight line I wouldn't worry too much about it. It reminds me of when you were riding a bike as a kid and your rear tire would get low.

Yea but wait until you get over 130 mph and then see how the sway feels!!!!!

Tommy V said:

Yea but wait until you get over 130 mph and then see how the sway feels!!!!!

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I'll have to let you know. Should be signing up for Wanna go fast Ocala FL in OCT. Hoping to crack the 160s Been 155 and planing on a gear change and MORE BOOOOOOST.

Chach805, did you drive to and from the track on the R's as well? How are they on the street?

Matt

66sprint6 said:

Chach805, did you drive to and from the track on the R's as well? How are they on the street?

Matt

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Yeah I drove them back home. I just put the tires to 29 psi before I hit the free way. They drove great. They actually supprised me how good they handled on the free way. Drove 70-75mph all the way. I didn't feel any sway. Totally doable!

Thats what I needed to hear!!!! Thanks for the info!

Matt

So can we say that the conclusion of running mickey thompson et street r bias ply tires in rear with stock wheels and radials up front will be fine ?

Well on behalf of my experience, yeah I would say you'd be fine. I honestly didn't have much sway if not any. Nothing dramatic at all. I'm sure it would feel a little different once u start trapping 130mph+. I was in the 114-115ish mph.