Any issues with 275/35 R19 Tires?

[johnloov]

Okay I got the Rubbing fixed on the 275/35/stock19's by glueing the liner closer to the fender.

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[Xmetal]

Has anyone tried a 285/30/19 on stock wheel and suspension? Does it clear the suspension and fender?

Any rubbing on track?

This is an interesting size to try. Wondering if the 9.5 wide OE wheel is wide enough to make 285/30/19 work? Curious minds want to know if it would work as well

 

[Ymbz]

Here are the results after 2 heavy track days at COTA in the Advanced group on 275/35 19 Pirelli PZero Corsa Track tires.
...
1) There was rubbing under high load, high g force sustained sweepers at COTA. Front Right did eat through the plastic wheel liner, but did not hit metal.
...
Conclusion is - 275/35 19's work, and for most all people not tracking the car you will not rub, but if you are tracking the car, you will rub, but it won't rub into the metal, just the plastic liner.

John, iirc you had added sound deadening to wheel wells. Is there any chance the deadening material behind the liners pushed them away from the body and contributed to the rub you experienced on track? (Do you think a fully stock no-deadening setup would have the same issue?)

Was the rubbing caused by the inside or outside edge of the tire?

For context, I'm wondering if Conti ECS-02's 255/40R19 (diameter 27.0″, tread width 8.7″) on stock wheels and offset might work for me. It looks like your 275/35R19 has about 26.6" diameter with a 9.0″ tread width. So the Conti would be 0.2" taller, but 0.15" narrower from wheel center.

 

[johnloov]

Stock may or may not have issues. I took a heat gun and baseball bat and molded plastic. Easy to do. Also glued plastic abs patch and glued to closer to metal chassis, clears no problem under track loads. I would not be afraid as there is no metal contact. I do love the way the 275 35 19s ride. Way better on the street, much much smoother even with my street able track tires. I’m running pzero corsas. I’ve purchased 2 more sets. I do also have a set of Continental extreme force 265 35,19 I’ll try at COTA. I do want to try 285/30 19s at some point as it looks like they fit on stock rims.

it’s just a tiny bit wider as it’s proportional ratios.

 

[I♥️LCY]

Can anyone else confirm this 275/35/19 works on track during cornering loads and maximum forces?

Here is why I'm concerned, you can see it's getting really close to the fender, and this is a stock car with only negative camber ball joints in front ---

Would appreciate anyone's feedback that has tracked the tires asap!

This is what the stock tire looks like under heavy compression on track in a right hander.

Great thread. I didn't need convincing, but here it is.... My opinion stands, 30 series is NOT the right size tire for this car. I don't need an ITS module, I need a 35 series.

 

[johnloov]

Actually you make an excellent point, on track in Type R mode with the 35's zero issues, and tire wear is very even also. When I was on 30's it was too bumpy, and very difficult to manage even wear across the tire even with -3 camber in front. Road bumps, etc are a non issue. On my 4s I would have to run 41 PSI cold front 35-37 psi rear cold to ensure the side walls would not pinch. Currently I run 38 psi cold front and 32 cold rear on the Pzero Corsa's. Very smooth. Also wheel hop is eliminated by going a bigger diameter. The only negative is you lose a bit of gearing, but the extra sticky tires actually put down 2 second faster lap times than the cup 2's that were 265/30/19. Type R with the thicker side walls - it's like perfect.

Also... the touch bit more ground clearance is excellent. The wheels look more filled out, and no more scraping the nose.

Here are some photos on track under high g-forces

 

[I♥️LCY]

Actually you make an excellent point, on track in Type R mode with the 35's zero issues, and tire wear is very even also. When I was on 30's it was too bumpy, and very difficult to manage even wear across the tire even with -3 camber in front. Road bumps, etc are a non issue. On my 4s I would have to run 41 PSI cold front 35-37 psi rear cold to ensure the side walls would not pinch. Currently I run 38 psi cold front and 32 cold rear on the Pzero Corsa's. Very smooth. Also wheel hop is eliminated by going a bigger diameter. The only negative is you lose a bit of gearing, but the extra sticky tires actually put down 2 second faster lap times than the cup 2's that were 265/30/19. Type R with the thicker side walls - it's like perfect.

Also... the touch bit more ground clearance is excellent. The wheels look more filled out, and no more scraping the nose.

Here are some photos on track under high g-forces

It’s easy to think that almost 3° isn’t much, but that even wear is pretty impressive.


I should have read my Bible earlier… already feeling cynical. The regurgitation of affirmation metrics is through the roof with the car community.

 

[AZCWTypeR]

This is an interesting size to try. Wondering if the 9.5 wide OE wheel is wide enough to make 285/30/19 work? Curious minds want to know if it would work as well

TireRack.com specs tab shows recommended wheel widths for each tire size. Recommendations may vary between tire brands.

 

[johnloov]

Also one other massive benefit of installing 265-275/35/19 on the stock rims is - there is way more - a massive selection of discounted inventory on tirerack vs the stock 265/30/19

Same DWS is cheaper in 265/35 and 275/35 vs 265/30

 

[Han_Solo]

John I just want to confirm with 275/35R19 tires, did you have rubbing until you fixed the wheel liners and glued them closer to the bodywork?
Im running this setup on stock suspension but I have been contemplating Spoon Progressive Springs. Im really worried that I will get rubbing - I dont track btw.

Other option is waiting till this set of rubber is worn and replace with 265/35 with the Spoon Springs.

 

[johnloov]

I am on stock suspension, but I had modified my wheel liners with sound insulation so they were sagging. Others on completely stock did not have rubbing. But with springs, rub could be an issue. I personally don’t like lowered cars, due to decreased ground clearance, and most ruin the performance and ride if you don't match everything up perfectly and it's been thoroughly tested with exact dampeners, wheels, alignment, and total bushings etc.

If you don’t get springs you should be fine. If you find it slightly rubbing when steering wheel is turned all the way, you can use a heat gun and mold it back easy. It molds easy with light heat. Others on stock cars had no rubbing with 275/35 19 on stock rims. After you put the tires on, it filled the wheel arches so maybe if your purpose was aesthetics you may not need the springs.

Only the passenger side had some issues, it was sagging. Think stock you are fine. If not you can see like on driver side, it was barely touching under track load, so I just used a heat gun very light heat and molded it up.

I would not worry about this - it's cheap easy to replace wheel liners.

This guy had no rub, on track stock - I DM'd him

 

[Han_Solo]

I am on stock suspension, but I had modified my wheel liners with sound insulation so they were sagging. Others on completely stock did not have rubbing. But with springs, rub could be an issue. I personally don’t like lowered cars, due to decreased ground clearance, and most ruin the performance and ride if you don't match everything up perfectly and it's been thoroughly tested with exact dampeners, wheels, alignment, and total bushings etc.

If you don’t get springs you should be fine. If you find it slightly rubbing when steering wheel is turned all the way, you can use a heat gun and mold it back easy. It molds easy with light heat. Others on stock cars had no rubbing with 275/35 19 on stock rims. After you put the tires on, it filled the wheel arches so maybe if your purpose was aesthetics you may not need the springs.

Only the passenger side had some issues, it was sagging. Think stock you are fine. If not you can see like on driver side, it was barely touching under track load, so I just used a heat gun very light heat and molded it up.

I would not worry about this - it's cheap easy to replace wheel liners.

This guy had no rub, on track stock - I DM'd him

OK thanks that does make sense.

I have been fine so far with absolutely no rubbing on the street. It's really only the Spoon ones that interest me because of their progressive nature. Heard and read very good things about them and Spoon has a great reputation.

I'll most likely just wait for the next set of rubber and be safe.