[FNxR3DNECK]

Originally Posted by TrackClub

Yep, ive driven on bald NT01s in a rain. Anything is possible. But not fun. I would not get caught on semi slicks (DOT or not, they are RACE tires) on a wet autobahn even if somebody paid me big bucks. I had driven on various Euro hiways extensively and for many yrs. So again: NFW!!!

Agreed for the most part haha hence why the RRs are pretty much out the window for me. But I do want to try my hand at some R-Comps which is why I'm considering the AR-1s, or of course the G3Rs.

[TrackClub]

Originally Posted by FNxR3DNECK

Agreed for the most part haha hence why the RRs are pretty much out the window for me. But I do want to try my hand at some R-Comps which is why I'm considering the AR-1s, or of course the G3Rs.

Agree. If your reason is pace just go with G3Rs. I dont think you'll find anything close to it with official street capability (at least while the are newer). Cheers!

[FNxR3DNECK]

Originally Posted by glamcem

My fronts are 18x10.5" (315/30/18 Toyo RR) so it shouldn't be an issue to run 315 SQ. How are you going to be able to rotate front and rear unless you're using some excessive spacer up front for the rear wheels?

Speaking of RRs and rain, they will be fine unless it's a standing water (puddle) which would also be a problem for AR1 IMO. My friend with a C7 GS and I personally drove them in the rain before they were just fine, and they're DOT approved. Of course they're not ideal but it's doable

Good to hear about the 315s on the 10.5s, and yes I know a few guys that run the 18x10.5 ET22s up front with a 12mm spacer plus grinding the strut down (which I've already done) and are able to get max camber (-2.5/-2.8) so it shouldn't be an issue for me!

As for the RRs, I know they are DOT approved but being over here in Germany I'm not sure how religiously they follow the DOT standards mainly and I really don't want the Polizei to see me driving on what look like racing slicks to the non-trained eye, even if they are "technically" legal haha

Thanks for the input Cem!

[TrackClub]

Originally Posted by FNxR3DNECK

Good to hear about the 315s on the 10.5s, and yes I know a few guys that run the 18x10.5 ET22s up front with a 12mm spacer plus grinding the strut down (which I've already done) and are able to get max camber (-2.5/-2.8) so it shouldn't be an issue for me!

As for the RRs, I know they are DOT approved but being over here in Germany I'm not sure how religiously they follow the DOT standards mainly and I really don't want the Polizei to see me driving on what look like racing slicks to the non-trained eye, even if they are "technically" legal haha

Thanks for the input Cem!

Dont wanna beat a dead horse here, but there is a significant difference between DOT legal and DOT approved. One is for street use, another for racing classes requiring "street" tires. So technically an R7 is a "street" tire, even tho it does not have a usable tread of any kind whatsoever. Best source is Tire Rack which clearly splits top tire classes into Race Track ONLY vs STREETABLE Race Track classes. Police sentiments towards tires aside, if one wants to know what can possibly happen on a fast and wet hiway in busy traffic, take your car shodded in DOT slicks out on a wet race track for a few laps ( in a relatively controlled environment in comparion to public roads). Cheers!

[glamcem]

Originally Posted by FNxR3DNECK

Good to hear about the 315s on the 10.5s, and yes I know a few guys that run the 18x10.5 ET22s up front with a 12mm spacer plus grinding the strut down (which I've already done) and are able to get max camber (-2.5/-2.8) so it shouldn't be an issue for me!

As for the RRs, I know they are DOT approved but being over here in Germany I'm not sure how religiously they follow the DOT standards mainly and I really don't want the Polizei to see me driving on what look like racing slicks to the non-trained eye, even if they are "technically" legal haha

Thanks for the input Cem!

Of course! I understand your concerns

Originally Posted by TrackClub

Dont wanna beat a dead horse here, but there is a significant difference between DOT legal and DOT approved. One is for street use, another for racing classes requiring "street" tires. So technically an R7 is a "street" tire, even tho it does not have a usable tread of any kind whatsoever. Best source is Tire Rack which clearly splits top tire classes into Race Track ONLY vs STREETABLE Race Track classes. Police sentiments towards tires aside, if one wants to know what can possibly happen on a fast and wet hiway in busy traffic, take your car shodded in DOT slicks out on a wet race track for a few laps ( in a relatively controlled environment in comparion to public roads). Cheers!

Hmm I didn't know that. Thanks for the information.
BTW, slicks are whole different story of course, RRs still allow water to disperse since it still has treads unlike the full slicks. Of course to a certain extent they don't fully eliminate the risks of hydroplanning.

My point was they were just fine to drive and come back from with light rain and wet conditions as a temporary solution, I assume person who would consider these have already a second set of tires/wheels for other uses

Keep in mind , hydroplanning is still an issue for NT01 or AR-1 as well .. as they will quickly lose those "treads" ..NT01s were no fun when driving over standing waters but adjusting speed temporarily has never been an issue, if it rains hard I simply slow down

[TrackClub]

Originally Posted by glamcem

Of course! I understand your concerns



Hmm I didn't know that. Thanks for the information.
BTW, slicks are whole different story of course, RRs still allow water to disperse since it still has treads unlike the full slicks. Of course to a certain extent they don't fully eliminate the risks of hydroplanning.

My point was they were just fine to drive and come back from with light rain and wet conditions as a temporary solution, I assume person who would consider these have already a second set of tires/wheels for other uses

Keep in mind , hydroplanning is still an issue for NT01 or AR-1 as well .. as they will quickly lose those "treads" ..NT01s were no fun when driving over standing waters but adjusting speed temporarily has never been an issue, if it rains hard I simply slow down

Well those channels on RRs are half the depth and width of G3a as an example, plus they are located in the middle of the tire (vs G3 on the inside for a VERY good reason) so if one runs good camber consider that second channel to be ornamental only

Hey, i know a guy who drove home on full slicks in a rain. But that's not the point. A typical autobahn is also a very different story. And yes, you are absolutely correct even NT1s can be deadly when used up. Been there done it almost ditched the car multiple times going 30mph

[TheRealJA105]

I may or may not have driven to the track on PZero scrubs a couple times. Not a chance in hell i would've done it with rain in the forecast though.
TC is right about the DOT technicality, but idk what would legally play out with police intervention?
Regarding the RRs rain shedding ability. Even with the 2 channels they don't move the water out away from the tire because they are just straight grooves, so I doubt the hydroplane resistance is much better than a full slick.

[TrackClub]

Originally Posted by TheRealJA105

I may or may not have driven to the track on PZero scrubs a couple times. Not a chance in hell i would've done it with rain in the forecast though.
TC is right about the DOT technicality, but idk what would legally play out with police intervention?
Regarding the RRs rain shedding ability. Even with the 2 channels they don't move the water out away from the tire because they are just straight grooves, so I doubt the hydroplane resistance is much better than a full slick.

Guilty! Lol!

Note that most (if not all) DOT slicks have these words clearly printed on the sidewall: "for competition use only".
So, this would be of great help to any cop

As far as hydroplaning, it is the main channels that do most of the evacuation (backward vs to the side). That's why semi (truck) tires almost never have anything but straight channels.

Ive driven on G3s in very heavy rain with water pooling after 3 days on track and the main inside channels did their job well. But, they are twice as wide and twice as deep to start with vs RRs. Not to mention: more of them.

Of course where track pefromance is concerned different evacuation patterns are also used to reduce lateral tread squirm (such as wet Hoosiers, etc).

Bottom line, DOT slicks are still slicks