245/35/20 DON'T DO IT!

[Dragnet]

I went with ps4s 255/30/20. I'm liking them so far.

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[remc86007]

I went with ps4s 255/30/20. I'm liking them so far.

How different do they feel from stock? That's what I'm planning to do.

 

[typeroar]

Your problem isn't with the quality of the tire or increased sidewall. It's that you increased the diameter by 1 inch and circumference by 3 inches OVER the stock tire size. It's going to take more energy than before to make the larger tire do one revolution therefore making the car feel slower. Those that downsize to 18" wheels are running 255/40 & 265/35 which both have more sidewall than your setup and are getting better performance than stock because they're either staying the same diameter tire or going a little smaller.

 

[Dragnet]

How different do they feel from stock? That's what I'm planning to do.

I wish I was as in tune with the "feel" as some folks here are. It might not feel quite as "sharp" during turns, if that makes sense. They grip really good... if it's warmer out. I have noticed it has made the ride slightly more comfortable. I went with this model of tire because so many people were suggesting it if I wanted similar performance to the OEMs. I knew I definitely didn't want to give that up. They also lasts a lot longer too. I was originally going to get the ps4s in the same exact size as the OEM set but I went with the 255 instead of 245 because the 255 set was on sale. I got 4 ps4s 255/30/20 for around $950. That was several hundred cheaper than anywhere else I found at the time.

 

[itrgsr94]

For track the 245 30 20 are not so great , look at the sidewall,all lettering gone

Sadly, I have to head to Palm Beach International Raceway, that is scary though!

 

[itrgsr94]

Your problem isn't with the quality of the tire or increased sidewall. It's that you increased the diameter by 1 inch and circumference by 3 inches OVER the stock tire size. It's going to take more energy than before to make the larger tire do one revolution therefore making the car feel slower. Those that downsize to 18" wheels are running 255/40 & 265/35 which both have more sidewall than your setup and are getting better performance than stock because they're either staying the same diameter tire or going a little smaller.

You're correct, this post was just to give real world feedback. A lot of owners seem to want to go the bigger tire stock wheel route just wanted to give my input.

 

[idragmazda]

This post is to discuss the differences in using taller sidewall on the FK8. (My POV)

I purchased the Falken FK510 tires a few weeks ago in a 245/35/20.

I immediately noticed the steering response was much slower but wanted to put a few miles to break in the tire. That still hasn't changed, while it is more comfortable the car lost its edge and feels off.
Most importantly the acceleration has been muted, it's not nearly as visceral when WOT in second gear.

The car just doesn't pull as hard as before. (bone stock)
After a year you know your car, and it's not placebo it's real.
Personally, the tradeoff for comfort wasn't worth it.
I'm pretty sure it's the added sidewall and small but significant increase in diameter.
The calculation in tire size online doesn't tell the whole story, there is a reason Honda used the 30 profile.
I will be looking to go back to the stock size tire within a few months.

P.S.

The tire itself is not bad, not quite as much grip as stock, but no slouch.

100% agree. I put on 255/35/20 continental all seasons. While I don’t ever have to worry about most potholes and the ride is very comfortable, it feels duller and less peppy than the stock tires. I’m switching to 18s in spring so everything will be fine but just something for other ppl to consider.

 

[remc86007]

I wish I was as in tune with the "feel" as some folks here are. It might not feel quite as "sharp" during turns, if that makes sense. They grip really good... if it's warmer out. I have noticed it has made the ride slightly more comfortable. I went with this model of tire because so many people were suggesting it if I wanted similar performance to the OEMs. I knew I definitely didn't want to give that up. They also lasts a lot longer too. I was originally going to get the ps4s in the same exact size as the OEM set but I went with the 255 instead of 245 because the 255 set was on sale. I got 4 ps4s 255/30/20 for around $950. That was several hundred cheaper than anywhere else I found at the time.

Thanks for the response. If you don't mind me asking, where did you get four PS4s for $950? The cheapest I see is $310 per tire.

 

[Dragnet]

Thanks for the response. If you don't mind me asking, where did you get four PS4s for $950? The cheapest I see is $310 per tire.

I'll try to find the link although last time I checked they were no longer on sale.

 

[jasonjm]

For track the 245 30 20 are not so great , look at the sidewall,all lettering gone

Aaand the rim is bent from the looks of it.

So much for that red stripe!

But hey, you just have to take out a second loan to have new rims and tires for every track day.

Fixed, see!

 

[itrgsr94]

Update! As these tires wear-in I've noticed the grip levels are impressive considering a set cost $390 shipped. Acceleration has slightly improved, but most importantly they refuse to spin, no traction lights at all even in +R. (I don't launch 1st gear much, seems pointless.)

 

[Type-JZ]

Thanks for the review. But, i think the majority of people(at least that's what I assume) get the thicker tire to save their wheels a bit from pot holes. So obviously, this is the trade off. I doubt people get the tires for performance reasons if they did, you're review will really help them decide.

 

[Maxvti]

For track the 245 30 20 are not so great , look at the sidewall,all lettering gone

Picture tells - wrong camber, wrong temperature, wrong driving.

 

[remc86007]

Picture tells - wrong camber, wrong temperature, wrong driving.

Wrong camber? It looks stock to me. I agree that the tires were probably overheated and greasy feeling long before that damage occurred.

 

[Maxvti]

Wrong camber? It looks stock to me. I agree that the tires were probably overheated and greasy feeling long before that damage occurred.

Doesn`t matter what the stock camber is. That kind of damage primarily caused by the lack of negative camber and/or castor.

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