Outer tire wear at track?

[fasteddy]

Quick question for those who have tracked (Road course) your car already. How are the tires wearing, specifically the outer edge? I have always worn the outer edge of my tires on prior cars at the track. I am hoping this will be less of/or no issue with the BRZ due to the light weight and suspension design.

I am coming from a much heavier car (2005 GTO) that went through tires quickly. I promised myself I would not change anything on my BRZ until I have been to the track to see how everything works. I will be going in two weeks all stock.

Pat

[7thgear]

you will wear out the outside of your tire on any production car if you drive it hard enough

if you are scrubbing the outside of your tires on other cars, chances are you are going into corners too hot and using the tire to scrub of speed.

could also be a pressure issue or a mismatch in tire sizes


Will this car hold up better than your GTO, yes, it probably will, but going too hot into a corner will still give you improper wear issues.

also a little camber never hurt anyone.

[BlaineWasHere]

alignment anyone?

[YoKeutla]

Originally Posted by 7thgear

also a little camber never hurt anyone.

Camber will help with the tire wear on the outside, but you will also wear the insides of your tires a little more while you are driving on the street. It's one or the other in a sense. If you are tracking your car regularly, I would recommend some camber.

Like 7thgear said, your outside edges are wearing because the car is pushing. Dial it back on the track and adjust your pressures accordingly to reduce this. If you are set on not changing anything on your car, this would be the best bet for outside tire wear. You are still going to get that wear if you are tracking your car, but you can reduce it by taking those steps above.

[track_warrior]

You need an alignment to avoid outside tire wear.

I will be trying out first -1.5 front -2.5 rear first then start adjusting from there.

[fasteddy]

Guys, I understand the dynamics of it all and experimented with different setups on that car. Only so much camber is realistic for a daily driver. Even with -2.5 front and -2 rear the tire edges showed more wear than I would have liked.

The track I go to is BIR and is predominatly right hand turns, hence most people end up with the left front tire edge taking a beating.

I am simply asking will I have that issue on a stock BRZ?

Like I said I am not planning on changing anything until at least one time at the track.

Thanks.

Pat

[7thgear]

you say

Originally Posted by fasteddy

Guys, I understand the dynamics of it all

but then

Originally Posted by fasteddy

I am simply asking will I have that issue on a stock BRZ?

yes, you will have wear on the outside of your tires in stock trim, it is a macpherson strut car after all

it will probably do better than a heavier car but you're not going escape it unless you add a bit camber and use a stiffer tire.

[GScooter]

I too am coming from a heavy, powerful car (M5). I also am hard on the outsides of my tires and am certain that it is because of what 7thGear said. I'm using the tires to scrub off speed in the turns. Even worse (for outside tire wear), I occasionaly throttle steer to the point of power understeer in some turns. In a fit of stupidity, trying to run down a GT3, I hamfisted my M5 to where I actually wore a set of Conti Extreme Contacts' to the point that the top of the C in Continental was rubbed raw.

Right, wrong, or indifferent, that is how I drove my 100% stock FRS the first of 2 trackdays. PSI was set to 35 with outside temps from 77 to above 96. Hot temps were about 41 - 42 PSI and pressure was lowered as the day went on to keep the hot temps in this range. My front's showed evidence of use on the edges but not what I would consider wear. (I rubbed the top of the half moon indicators but not the bottoms.)The rears were untouched as expected.

My advice to you is simple. Either don't worry about it at all or try what I did the second day. Move the brake points back what seems like a lot and ever so slightly ease up on the throttle in the turns. My wear indicators weren't even touched the second day. Clean lap times did drop slightly but they were much improved consistency wise.

BTW, the stock Michelin's scream like a sack of drowning cats but they are very predictable while doing so.

[ToxicSneakers]

The sound you hear is from the autox backup singers.

If I don't scrub my tires at the track there won't be much, if any, body scum to detail.

(I see an opportunity to experience several sets of tires and know which are the best. Cost is no limitation. IMO the Michelins are perfect summer touring and fun squealers.)

[fasteddy]

Originally Posted by GScooter

I too am coming from a heavy, powerful car (M5). I also am hard on the outsides of my tires and am certain that it is because of what 7thGear said. I'm using the tires to scrub off speed in the turns. Even worse (for outside tire wear), I occasionaly throttle steer to the point of power understeer in some turns. In a fit of stupidity, trying to run down a GT3, I hamfisted my M5 to where I actually wore a set of Conti Extreme Contacts' to the point that the top of the C in Continental was rubbed raw.

Right, wrong, or indifferent, that is how I drove my 100% stock FRS the first of 2 trackdays. PSI was set to 35 with outside temps from 77 to above 96. Hot temps were about 41 - 42 PSI and pressure was lowered as the day went on to keep the hot temps in this range. My front's showed evidence of use on the edges but not what I would consider wear. (I rubbed the top of the half moon indicators but not the bottoms.)The rears were untouched as expected.

My advice to you is simple. Either don't worry about it at all or try what I did the second day. Move the brake points back what seems like a lot and ever so slightly ease up on the throttle in the turns. My wear indicators weren't even touched the second day. Clean lap times did drop slightly but they were much improved consistency wise.

BTW, the stock Michelin's scream like a sack of drowning cats but they are very predictable while doing so.

Thanks! That is exactly the kind of feedback I was looking for.

Pat

[jamal]

Originally Posted by pcasso87

You need an alignment to avoid outside tire wear.

I will be trying out first -1.5 front -2.5 rear first then start adjusting from there.

That's not going to work well. Front suspension is macpherson, rear is multi-link and has a much better camber curve. -2.5 front -1.5 rear would be a better start.

The real answer is to get a cheap IR thermometer.

[CB762]

Does anyone have numbers on the stock alignment?
I would start just a few degree from there.

[Sam Strano]

Originally Posted by pcasso87

You need an alignment to avoid outside tire wear.

I will be trying out first -1.5 front -2.5 rear first then start adjusting from there.

Are you serious?

[track_warrior]

Originally Posted by Sam Strano

Are you serious?

I have no idea where to start The car is so new not alot of data is out there but a good friend suggested we do a skid pad and take tire temps and start adjusting from there. The good thing is SoulSpeed which is an alignment company moved to the track so i can adjust on the fly!!