[M2guru]

Anyone else doing what you shouldn't be doing: keeping track of costs? The one I just got done looking at is the cost of street tires per lap (not used/take-offs). For me, the Goodyear Supercar 3R is most expensive at $8.96 per lap. Next is the RE71RS at $8.94 per lap (not quite at cords yet on these so it could go down a little). Then the best value for me, is Hankook RS4 at $6.65 per lap. From a track time perspective it's tough to know which has the performance benefit because my skill has improved and the car has changed.

[AmuroRay]

I'm not as hardcore as you guys - but are you looking to set records or be competitive? Then the fastest tire wins - if not, something like the RS4 which is said to last long and still be very quick, would be my vote.

[M2guru]

Originally Posted by AmuroRay

I'm not as hardcore as you guys - but are you looking to set records or be competitive? Then the fastest tire wins - if not, something like the RS4 which is said to last long and still be very quick, would be my vote.

I was just looking to share information about street tires on the track. Lots of variables including driving style, car set up, and track surface (just to name a few). Was curious if anyone else also calculated their tire cost. That's it - pretty simple intent.

[AmuroRay]

Originally Posted by M2guru

I was just looking to share information about street tires on the track. Lots of variables including driving style, car set up, and track surface (just to name a few). Was curious if anyone else also calculated their tire cost. That's it - pretty simple intent.

Oh, are you asking how many tires people go through? I'm sorry, I'm a little dense at times, not trying to crap on your thread or anything.

[M2guru]

Originally Posted by AmuroRay

Oh, are you asking how many tires people go through? I'm sorry, I'm a little dense at times, not trying to crap on your thread or anything.

Not really. No worries. I didn’t take any offense.

[dvas]

You should calculate by track mile as some track's laps are twice as long as others.

My conservative calculation estimates that my experience with NT01s is $4.41 per lap at LRP, or $2.94 per mile per set.

[M1500Z]

Originally Posted by M2guru

Anyone else doing what you shouldn't be doing: keeping track of costs? The one I just got done looking at is the cost of street tires per lap (not used/take-offs). For me, the Goodyear Supercar 3R is most expensive at $8.96 per lap. Next is the RE71RS at $8.94 per lap (not quite at cords yet on these so it could go down a little). Then the best value for me, is Hankook RS4 at $6.65 per lap. From a track time perspective it's tough to know which has the performance benefit because my skill has improved and the car has changed.

Originally Posted by dvas

You should calculate by track mile as some track's laps are twice as long as others.

My conservative calculation estimates that my experience with NT01s is $4.41 per lap at LRP, or $2.94 per mile per set.

I like this idea of calculating costs of consumables and agree with dvas that per mile would work better for rough comparisons. Here are my rough calculations (275/35-18 without rotation). I haven't been doing this in the past but now I think I'll look at Airtable or playing with a spreadsheet to keep better track of all these consumable costs.

Goodyear SC3 R ($1666 / 354 miles) = $4.71/mile
Bridgestone RE-71RS ($1564 / 673 miles) = $2.32/mile

I got far better life out of the RE-71RS than the SC3R which is a shame because I prefer the consistency of the SC3R. I also couldn't get the SC3R to go as fast but that's a different story.

[M2guru]

Changed from per lap to per mile:

Bridgestone RE71RS: $2.31
Hankook RS4: $2.55
Goodyear Supercar 3R: $3.58

[ThreeStripes]

Tracking consumables ain’t my bag but I love tracking how little bs I deal with to get my jollies.

15mins from bed to paddock. No trailer, no box of bs, no car load of wheels/tires. 60 minutes to bolt on track wheels and swap pads and I’m bullying GT3s on a world class track in the same car that takes me to the office.

[medphysdave]

You all are making me very glad I picked the 71RS. Thanks for the breakdown.

[ZM2]

Originally Posted by M1500Z

I like this idea of calculating costs of consumables and agree with dvas that per mile would work better for rough comparisons. Here are my rough calculations (275/35-18 without rotation). I haven't been doing this in the past but now I think I'll look at Airtable or playing with a spreadsheet to keep better track of all these consumable costs.

Goodyear SC3 R ($1666 / 354 miles) = $4.71/mile
Bridgestone RE-71RS ($1564 / 673 miles) = $2.32/mile

I got far better life out of the RE-71RS than the SC3R which is a shame because I prefer the consistency of the SC3R. I also couldn't get the SC3R to go as fast but that's a different story.

The 71RS does have an interesting grip lifecycle.

My fav thing about Supercars is watching the ZL1’s on SC’s in my rear view trying to keep up with my OG M2 on 71RS’s in the corners, and quickly having to practice their counter steering skills as I pull a gap on them on my arrive & drive tires.

[VicF87OG]

Appreciate the cost brake down of these tiers
I’m super happy with the RE71, so happy that I put them on on my street rims also.

They last much longer then Cup 2s
on track. I typically run about 70-90
laps on the Grand Prix track at Mosport.
It’s a high speed track with some awsome
elevation changes.
Lots of weight transfer and I felt the RE71 were very progressive and alowed me to get some great lateral acceleration
G-numbers.
1.3 Gs max

[M2guru]

Originally Posted by VicF87OG

Appreciate the cost brake down of these tiers
I’m super happy with the RE71, so happy that I put them on on my street rims also.

They last much longer then Cup 2s
on track. I typically run about 70-90
laps on the Grand Prix track at Mosport.
It’s a high speed track with some awsome
elevation changes.
Lots of weight transfer and I felt the RE71 were very progressive and alowed me to get some great lateral acceleration
G-numbers.
1.3 Gs max

1.2 Gs on my RE71 but that’s only -3.2 camber up front. I am looking forward to coilovers some day to get to -4.x.

[AmuroRay]

UNrelated, but related - have you seen this?

https://grassrootsmotorsports.com/ar...-buyers-guide/

[FaRKle!]

Originally Posted by M2guru

For me, the Goodyear Supercar 3R is most expensive at $8.96 per lap. Next is the RE71RS at $8.94 per lap (not quite at cords yet on these so it could go down a little). Then the best value for me, is Hankook RS4 at $6.65 per lap.

Originally Posted by M2guru

Changed from per lap to per mile:

Bridgestone RE71RS: $2.31
Hankook RS4: $2.55
Goodyear Supercar 3R: $3.58

How did RE71RS and RS4 swap places after converting to per mile unless the mix of tracks (and their lap lengths) changed between the tires too (in which case per lap is kind of meaningless)?

[medphysdave]

Originally Posted by AmuroRay

UNrelated, but related - have you seen this?

https://grassrootsmotorsports.com/ar...-buyers-guide/

A lot to digest, but a good read. I wouldn't mind carrying tires to the track and changing them, but it can be a pain. I like the appeal of a tire I put on at home and then can drive home from the track. I'd hate to have a rainy track day and need to change my tires. Or have to leave them out in the rain and then put them back into my car. I travel light so I don't bring a tent or anything with me, but maybe I should reconsider this choice.

[M2guru]

Originally Posted by FaRKle!

How did RE71RS and RS4 swap places after converting to per mile unless the mix of tracks (and their lap lengths) changed between the tires too (in which case per lap is kind of meaningless)?

Thanks for encouraging me to check my math. Here are the revised numbers:

RS4 = $2.80
RE71RS = $3.27
Supercar 3R = $3.58

[FaRKle!]

Originally Posted by M2guru

Thanks for encouraging me to check my math. Here are the revised numbers:

RS4 = $2.80
RE71RS = $3.27
Supercar 3R = $3.58

Thanks, that makes a lot more sense to me!

[ZM2]

Was waiting for those numbers to get sorted. No way a 71RS lasts longer than an RS4.

And GRM has been the go to track tire review source for some years, and now Tyrereviews, as well. Much better than Tirerack.

[medphysdave]

Article in favor of re71rs

https://www.thedrive.com/car-reviews...on-both-coasts

[dvas]

Originally Posted by medphysdave

Article in favor of re71rs

https://www.thedrive.com/car-reviews...on-both-coasts

Excerpt I pulled from the article:

"The invisible magic is in the new compound. Bridgestone focused particularly on consistency with the RE-71RS. Folks who have sampled the RE-71R (myself included, but more on that later), know that it had one hugely fast lap time in it, but fell off during a long session. This is how the old tire got its reputation as an autocross “cheater” tire. The RE-71RS goes faster than the RE-71R, and does it for an entire race stint with minimal wear."

This is encouraging as I continue to search for a better HPDE tire than the NT01s, IMO. I tried a few sets of the original RE71R and liked them. They were ready to go on the first lap and had great communication which made them easy to drive fast. They were marginally faster (a few tenths around LRP) than NT01s but died after a single hot lap or two, which takes a lot of the fun out of a session. Also, my 275/18 square set lasted all of four days with rotation and were considerably more expensive than NT01s.

If Bridgestone has been able to solve the consistency issue, that is a hugely appealing. That the new ones are even faster on a single lap is a bonus.

Originally Posted by AmuroRay

UNrelated, but related - have you seen this?

https://grassrootsmotorsports.com/ar...-buyers-guide/

It looks like they recently updated the table and now it doesn't seem to make sense to me. NT01s, used to be rated at "B" for Time Trial Pace but now they are a "C", slower than Sport Cup 2s and most other 200 treadwear tires? My experience does not support that at all. Also, a "D" for heat tolerance and "B" for wear? NT01s are the some of the most consistent tires I've tried and will not get greasy for a 20 minute session except when sliding them a lot on the hottest of days. They also don't heat cycle out, and get faster down to the chords which in my experience takes about 7 full, dry days. None of the 200 treadwear tires I've tried come close, yet they are rated the same of better for wear?

Having said that, I'm not married to the NT01s and would love to discover a better tire, but this updated table does not seem accurate or consistent.

[FaRKle!]

Originally Posted by dvas

It looks like they recently updated the table and now it doesn't seem to make sense to me. NT01s, used to be rated at "B" for Time Trial Pace but now they are a "C", slower than Sport Cup 2s and most other 200 treadwear tires? My experience does not support that at all. Also, a "D" for heat tolerance and "B" for wear? NT01s are the some of the most consistent tires I've tried and will not get greasy for a 20 minute session except when sliding them a lot on the hottest of days. They also don't heat cycle out, and get faster down to the chords which in my experience takes about 7 full, dry days. None of the 200 treadwear tires I've tried come close, yet they are rated the same of better for wear?

Having said that, I'm not married to the NT01s and would love to discover a better tire, but this updated table does not seem accurate or consistent.

Hrm. I can't say my experience matched yours with the NT01. I definitely had them heat cycle out on me well before the cords, and really didn't find any benefit with them over the RS4.

I agree with you that their heat tolerance is way better than a D though. I mean D is A052 bad, and that's a tire you have to alternate fast/slow laps on to keep in range...