More durable/affordable tire option?

[Supercharged111]

Because this is a science experiment at this point, have you guys considered super sizing and running the 615 in TT or PTX/STX and Toyos in CMC in the same weekend to preserve car counts?

On a side note, will 225 tires fit my Z06 wheels? The desired end state here is reduction in costs, sure would suck if I had to run out and find new wheels.

[mach1]

Because this is a science experiment at this point, have you guys considered super sizing and running the 615 in TT or PTX/STX and Toyos in CMC in the same weekend to preserve car counts?

On a side note, will 225 tires fit my Z06 wheels? The desired end state here is reduction in costs, sure would suck if I had to run out and find new wheels.

Great point on sizing! A 245 is 150 per tire, same od and will fit 17x9.5 without issue, perfect tire!

[Sook]

Great point on sizing! A 245 is 150 per tire, same od and will fit 17x9.5 without issue, perfect tire!

I was looking at 255s, the price difference to the 275 is substantial. I think for the first test we should all be on the same size tire.

https://www.tirerack.com/tires/tires...15KP&tab=Sizes

- Josh

[Supercharged111]

Because this is a science experiment at this point, have you guys considered super sizing and running the 615 in TT or PTX/STX and Toyos in CMC in the same weekend to preserve car counts?

On a side note, will 225 tires fit my Z06 wheels? The desired end state here is reduction in costs, sure would suck if I had to run out and find new wheels.

I meant 255, but my question was still answered.

[mach1]

The 255’s are a smaller OD and will affect gearing for folks. The load rating is also noticeably higher on the 245’s

[drecords]

Because this is a science experiment at this point, have you guys considered super sizing and running the 615 in TT or PTX/STX and Toyos in CMC in the same weekend to preserve car counts?

On a side note, will 225 tires fit my Z06 wheels? The desired end state here is reduction in costs, sure would suck if I had to run out and find new wheels.

This is what I had originally proposed. TT test on Azenis and class race on Toyo. Then things went off the deep end

[RichardP]

This is what I had originally proposed. TT test on Azenis and class race on Toyo. Then things went off the deep end

Nobody has committed to anything yet. The test group can go that way if they want. I don't think the data is quite as good but it might be sufficient. At least good enough to see if more testing is warranted. Costs more for the test participants but they would get to race with the rest of the group.


Richard P.

[Sook]

Nobody has committed to anything yet. The test group can go that way if they want. I don't think the data is quite as good but it might be sufficient. At least good enough to see if more testing is warranted. Costs more for the test participants but they would get to race with the rest of the group.


Richard P.

I could go either way I suppose. If we're actually racing I think it'll be a better test in the heat of battle.

So the 245/45/17 Azenis is nearly the same OD as the 275/40/17 RRs. The 255/40/17 Azenis is wider than the 245 (obviously), should be better for wear and heat. The 255 Azenis is 0.6" smaller in OD (25.6" OD for the RR, 25" for the 255 Azenis). The price difference for the 255/245 Azenis is less than $1 on tire rack. These tires are in the $150 range - tires at this price would substantially change my ability to show up to races and prepare the car.

255: https://www.tirerack.com/tires/tires...omCompare1=yes

245: https://www.tirerack.com/tires/tires...omCompare1=yes

- Josh

[mach1]

I could go either way I suppose. If we're actually racing I think it'll be a better test in the heat of battle.

So the 245/45/17 Azenis is nearly the same OD as the 275/40/17 RRs. The 255/40/17 Azenis is wider than the 245 (obviously), should be better for wear and heat. The 255 Azenis is 0.6" smaller in OD (25.6" OD for the RR, 25" for the 255 Azenis). The price difference for the 255/245 Azenis is less than $1 on tire rack. These tires are in the $150 range - tires at this price would substantially change my ability to show up to races and prepare the car.

255: https://www.tirerack.com/tires/tires...omCompare1=yes

245: https://www.tirerack.com/tires/tires...omCompare1=yes

- Josh

I think the 245 is the better option and I think it will actually handle the heat better by the load ratings(10%+ higher on the 245).

Should we do a poll? The 255 may run out of gear w/o a RR OD on your trans at some tracks (cota?).

My vote is 245

[RichardP]

I think the 245 is the better option and I think it will actually handle the heat better by the load ratings(10%+ higher on the 245).

Should we do a poll? The 255 may run out of gear w/o a RR OD on your trans at some tracks (cota?).

My vote is 245

According to the Falken tire website, the 245 isn't good for the width of the wheels we run. http://www.falkentire.com/tires/pass...is-rt615k-tire

245 = 7.5-9.0"
255 = 8.5-10.0"
275 = 9.0-11.0"

There are a lot of 9.5" wide wheels in the CMC field.

Additionally, right now big black doughnuts are a common and minor form of damage on the sides of our bodywork. At some point, wheel contact would cause more damage to both cars. Not the best money saving option.


Richard P.