2019 GT350R - tramlining , any suggestions?

[JAJ]

Thanks for this.

Just want to make sure you’re certain on the tire sizes? I put them into tire rack to check prices and got nada. Maybe they don’t carry them, idk.

Fronts are A/S-3+'s in 275/40x19 and rears are A/S Plus N-Spec in 285/40x19. They work fine together but because they aren't exactly the same, the TR search engine won't display them.

I was fortunate enough to get a pair of 285/40x19 A/S-3's (without the "+") back in 2016 and I have them on the rear of my car on OEM aluminum rims.

These are the smallest width tires that will work on the GT350R OEM rims. If you pick up a set of GT350 OEM rims, you can run 265/40x19 and 275/40x19 both in A/S-3+. They are not recommended by Michelin for the wider "R" rims.

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[tracktardicus]

I'm running the Pilot SPort 4S 305/30/19-sized tires on all 4 corners for street use, and the tramlining is gone, even with -2.5 degree camber dialed in.

 

[Droopy1592]

The MPSS and Cup tires tramline in sizes this wide (295+). I had my alignment checked and the right front was dialed down to -1.5 camber (was at -2) and left was at -1.5. It cut down on the tram lining substantially but it’s still there, it’s the nature of this beast. Also, putting steering in comfort mode also cuts back the severity somewhat noticeably. If you want it to be reduced more, try a different tire. I saw a post somewhere that mentioned some suspension parts that could be the culprit.

 

[03reptile]

Fronts are A/S-3+'s in 275/40x19 and rears are A/S Plus N-Spec in 285/40x19. They work fine together but because they aren't exactly the same, the TR search engine won't display them.

I was fortunate enough to get a pair of 285/40x19 A/S-3's (without the "+") back in 2016 and I have them on the rear of my car on OEM aluminum rims.

These are the smallest width tires that will work on the GT350R OEM rims. If you pick up a set of GT350 OEM rims, you can run 265/40x19 and 275/40x19 both in A/S-3+. They are not recommended by Michelin for the wider "R" rims.

Above info is exactly what my racing tire man recommended for the best performance and least effect on speedo error. The rears are a Porsche spec tire and run damned wide. They are wider than the 305 Cup 2's.

 

[stanglife]

Tire compound, tire pressure, tire size and alignment. I'd skip any kind of brace = added weight.

 

[nastang87xx]

Tire compound, tire pressure, tire size and alignment. I'd skip any kind of brace = added weight.

Yeah I kinda just deal with it. That type of brace I don't think really is going to do anything on track or autocross.

 

[treefiddysnek]

I'm running the Pilot SPort 4S 305/30/19-sized tires on all 4 corners for street use, and the tramlining is gone, even with -2.5 degree camber dialed in.

I'm running these same tires on my GT350R, except I'm running staggered with 325s in the back. They completely eliminated the tramlining I was experiencing with the cup 2s, and they have a longer tread life on the street. They were definitely worth the purchase.

 

[stanglife]

Same 4S on mine = almost zero tramlining.

 

[Doskiller]

Pilot Sport 4S tires solved all my tramlining issues on both my 350 and 350R. I used that brace on my 350 and it did exactly nothing but add weight .......... ;-)

 

[RJay]

I know I would be compromising optimum performance, but I too am considering swapping tires and keeping the SC2s for track use. I am curious as to other behavior differences with the PS. Do you find them smoother, less noise, change in mpgs?

I must say I love my MPSS's! Drove straight from the dealer to the tire shop for a swap - drive them daily and could not be happier - consistently average 22-23 MPG. Two great things: they don't vacuum up every rock on the road and you can buy 295/35ZR19's and 305/35ZR19's directly from Tire Rack (Base GT350).

 

[Niz55]

Next tire set I am doing 215-45-19 up front. That should take care of it and fix the problem.

 

[BmacIL]

About two months into ownership of my GT350R- I love everything about this car accept the tramlining so seeking thoughts and suggestions on adjustments / mods ? I’d prefer not to change tires , and if this is just a deal with it track car experience then that’ll be my plan. Thoughts are appreciated, thanks in advance!

It's tires.

 

[mzangari1234]

Thanks all - sounds like my only option is new tires - appreciate the responses!

 

[jgruben1134]

Thanks all - sounds like my only option is new tires - appreciate the responses!

Yep, definitely tires. I test drove several cars before buying my PP2. None of the non-PP2 cars had this issue, but mine, with the Cup 2's does. It's manageable, but its definitely there. I think I'll be going to PS4s when the time comes.

 

[svttim]

When the dealer installed my caster camber plates I told them to align it to street specs. Im not sure what specs they used but, no tramline with the SC2. Easy to drive and, it worked fine on track as well although Im sure not ideal

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