[PROMETHEUS]

Morning Everyone,

Need some advise from those with experiences utilizing scrub slicks.
I have a set of APEX SM-10s 18x11 and 18x12 on the way soon. I want to take advantage of using scrub slicks.

With that said, I am looking for MM ranges for both the front and rear. I would like to stay in the height of the OEMs which equate to 678mm in the front and 691 in the rear.

So I am thinking 305/315 680/18 and 325/335 680/18 in the rear. Any advise on sizes "ranges" without rubbing and manufacturers is appreciated. I am already using a 3mm spacer up front and moved the wiring harness on the driver's rear.

Thanks in advance!!

[Stephen12ZL1]

I just used 315/680-18 front and 325/680-18 rear Pirelli DH scrubs and they worked great. The 315s up front would rub the fender liner a little at full lock but nothing much. On track I noticed nothing other than exceptional grip.

[SFV1LE]

I agree with Stephen12ZL1, I have run 3 sets of DH scrubs in XXX/680/18 front and rear. 680 is the only diameter you should run. I tried both 305 and 315 front, and agree that 315 is a little wide and actually damaged my liner because I wasn’t careful not to go full lock, if you just remember this you’ll be fine—it’s only an issue when you’re trying to park or backing out of tight spots. But 315 provide somewhat better grip. I only run 325 rear but if 335 is available I would try that.

Overall the Pirelli DH is a great tire, equal or better grip than SC3R as long as they haven’t been over cycled.

I also used Hot Lap Victory Lane to soften them and this stuff works, improves grip and and prolongs life. It’s a pain in the ass to apply 6 coats, 3 coats per day over 2 days. I also used a Speedway Racing tire needler.

[PROMETHEUS]

Originally Posted by Stephen12ZL1

I just used 315/680-18 front and 325/680-18 rear Pirelli DH scrubs and they worked great. The 315s up front would rub the fender liner a little at full lock but nothing much. On track I noticed nothing other than exceptional grip.

Thanks my Friend!

[PROMETHEUS]

Originally Posted by SFV1LE

I agree with Stephen12ZL1, I have run 3 sets of DH scrubs in XXX/680/18 front and rear. 680 is the only diameter you should run. I tried both 305 and 315 front, and agree that 315 is a little wide and actually damaged my liner because I wasn’t careful not to go full lock, if you just remember this you’ll be fine—it’s only an issue when you’re trying to park or backing out of tight spots. But 315 provide somewhat better grip. I only run 325 rear but if 335 is available I would try that.

Overall the Pirelli DH is a great tire, equal or better grip than SC3R as long as they haven’t been over cycled.

I also used Hot Lap Victory Lane to soften them and this stuff works, improves grip and and prolongs life. It’s a pain in the ass to apply 6 coats, 3 coats per day over 2 days. I also used a Speedway Racing tire needler.

Thank you, great information, just what I am looking for.

[PROMETHEUS]

One final question, I have found only two websites that sell them, GT Racing Tires and Used Racing Tires. Is that the only two? If so, would you recommend one over the other. Thanks again.

[jvandy50]

Originally Posted by Stephen12ZL1

I just used 315/680-18 front and 325/680-18 rear Pirelli DH scrubs and they worked great. The 315s up front would rub the fender liner a little at full lock but nothing much. On track I noticed nothing other than exceptional grip.

I saw you got BC Forged 18s on another thread, any other modifications needed to make it work on the ZLE?

[SFV1LE]

Originally Posted by PROMETHEUS

One final question, I have found only two websites that sell them, GT Racing Tires and Used Racing Tires. Is that the only two? If so, would you recommend one over the other. Thanks again.

Those are the only 2 sources I'm aware of for quality scrubs.

[PROMETHEUS]

Originally Posted by SFV1LE

Those are the only 2 sources I'm aware of for quality scrubs.

Thanks again.

[Stephen12ZL1]

Originally Posted by jvandy50

I saw you got BC Forged 18s on another thread, any other modifications needed to make it work on the ZLE?

no modifications...even the stock lugs work. If a tech puts the wheel weights on in the middle of the inner wheel they probably will contact the caliper. The clearance is tightest on the bottom part of the caliper where the crossover line is present.

[Stephen12ZL1]

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