15" Brake Conversion??

[vortecd]

The 35s are over 3" shorter than what I have now. That adds a bunch of gear which I'm not sure that it needs.

315/50 not 35s

 

[vortecd]

https://www.summitracing.com/parts/...2Ul-3TxrIKjWlaKMjrswKjAmFHLJf8jgNGPuPVMUHhfyc

 

[DavidKFla]

https://www.summitracing.com/parts/...2Ul-3TxrIKjWlaKMjrswKjAmFHLJf8jgNGPuPVMUHhfyc

This must be the remaining stock?

 

[jonx96]

Must be. Get them while they last. The 55 is bigger than you need that 315 50 is perfect for you.

 

[DavidKFla]

Must be. Get them while they last. The 55 is bigger than you need that 315 50 is perfect for you.

It's 29.4 inches. 55s are 31 inches.

 

[DavidKFla]

Must be. Get them while they last. The 55 is bigger than you need that 315 50 is perfect for you.

Just ordered. I didn't want either the 35s or 55s. This works in my head. Now for some beadlocks.

 

[jonx96]

Just ordered. I didn't want either the 35s or 55s. This works in my head. Now for some beadlocks.

I had good luck with balancing beads if you want to save money.

 

[DavidKFla]

I had good luck with balancing beads if you want to save money.

I've used them in the past and never got them right.

 

[fumanchu182]

After the great tire snafu of 2022 and 2021 I switched to 15" wheels and the brake conversion for traction and availability issues. Plenty of 275r15 and 295r15 tires available. 305s, 315 and other sizes were unobtanium.

 

[DavidKFla]

After the great tire snafu of 2022 and 2021 I switched to 15" wheels and the brake conversion for traction and availability issues. Plenty of 275r15 and 295r15 tires available. 305s, 315 and other sizes were unobtanium.

My 305-18s has lasted for 4 seasons. Still have meat on them but I think they're done.

 

[DGatzby]

My 305-18s has lasted for 4 seasons. Still have meat on them but I think they're done.

I am going to agree. Both sets of my tires, the PS4S streets and Cup 2 track rears look great, but especially the street tires don’t grip like they did that first season. It is just not just a seat of the pants call here, more power or my imagination. The greatest forward g-force my vehicle recorded was when those tires were fresh that first season. This last season, I tried a few 0-60 runs. Not even close, I probably aborted every try or feathered it to the max and just ran it out. @Jon-MooredPerformanceLLC has seen what I need to do with my right foot in detail in a log, and after the tuning, I can’t go WOT until about 80! Shit, even at 80 mph or more, a quick stab can produce dangerous wheel spin. These can be dangerous and good fresh rubber is required.

Good call @DavidKFla.

 

[DavidKFla]

I am going to agree. Both sets of my tires, the PS4S streets and Cup 2 track rears look great, but especially the street tires don’t grip like they did that first season. It is just not just a seat of the pants call here, more power or my imagination. The greatest forward g-force my vehicle recorded was when those tires were fresh that first season. This last season, I tried a few 0-60 runs. Not even close, I probably aborted every try or feathered it to the max and just ran it out. @Jon-MooredPerformanceLLC has seen what I need to do with my right foot in detail in a log, and after the tuning, I can’t go WOT until about 80! Shit, even at 80 mph or more, a quick stab can produce dangerous wheel spin. These can be dangerous and good fresh rubber is required.

Good call @DavidKFla.

I've resisting going to a larger tire but now I have no choice if I want to hook up and go. Constantly spinning isn't winning.

 

[fubar569]

No more 315/50 ET R?

Goddammit.

 

[DavidKFla]

No more 315/50 ET R?

Goddammit.

I did manage to order a pair. They're just not on the Mickey Thompson website right now.

 

[fubar569]

I did manage to order a pair. They're just not on the Mickey Thompson website right now.

I just didn't need to order another pair right now. Car needs street tires in the spring as-is.

I have one spare pair of 315/50. Debating on stocking up or making the switch myself now.

 

[DavidKFla]

I just didn't need to order another pair right now. Car needs street tires in the spring as-is.

I have one spare pair of 315/50. Debating on stocking up or making the switch myself now.

I only ever have what's mounted on the rims. I've never kept spares. I guess that I should bring the 18s for a backup now.

 

[vortecd]

I just didn't need to order another pair right now. Car needs street tires in the spring as-is.

I have one spare pair of 315/50. Debating on stocking up or making the switch myself now.

I know I will be good next and maybe the year after so I can't see buying a set and having them set that long. May have to do the 15s but for now I'm not going to worry about it

 

[DavidKFla]

I know I will be good next and maybe the year after so I can't see buying a set and having them set that long. May have to do the 15s but for now I'm not going to worry about it

I've had my current drag radials for 3 years. Still plenty of wear left.

 

[Marc W]

I feel the need to chime in on the 15” conversion 🫤. If you want hook on those marginal (meaning shit) open track things they call test n tunes…. you will be astounded how much difference a proper 15” tire will make. I know that lots of people can point out that they ran a ________ on 17’s or even 18’s. Just right prep and a perfect launch and…. magic 🥳. Doing it consistently is the hard part. The big fat gas bag of a tire takes a lot of the shock out of the hit. It absorbs it and softly puts it to the track compared to the shorter sidewall tires. You can feel it. The shorter sidewall 17’s are more violent to the drivetrain. The 15 rides nicer on the street too. It’s like you have a air ride suspension built into the tire. Down side is… no they’re not dot legal and you don’t want to ever get caught in the rain but that could be said about the ET-R’s too.

 

[DavidKFla]

I feel the need to chime in on the 15” conversion 🫤. If you want hook on those marginal (meaning shit) open track things they call test n tunes…. you will be astounded how much difference a proper 15” tire will make. I know that lots of people can point out that they ran a ________ on 17’s or even 18’s. Just right prep and a perfect launch and…. magic 🥳. Doing it consistently is the hard part. The big fat gas bag of a tire takes a lot of the shock out of the hit. It absorbs it and softly puts it to the track compared to the shorter sidewall tires. You can feel it. The shorter sidewall 17’s are more violent to the drivetrain. The 15 rides nicer on the street too. It’s like you have a air ride suspension built into the tire. Down side is… no they’re not dot legal and you don’t want to ever get caught in the rain but that could be said about the ET-R’s too.

The 17s that I ordered has 1.4 inches of additional sidewall than the 18s I've been running. Hopefully it will hook better with my lower powered car.

The drag radial - slick only T&T and private rental that I attended recently were supposed to be well prepped. That was a lie.

Starting to wonder where or when I can attend an event equally prepped track?