For the street I would never try to squeeze a set of tire onto a smaller tim but this is Solo2. It's done all the time. lol.[/b]

People do meth all the time, too. Doesn't make it a good idea. :nono:

In fact, the stresses that autocrossing put on a tire will only magnify the negatives associated with doing this, which makes it worse than doing this on the street. Seriously, match the tire size to the wheel you have, and you'll get the max benefit.

 

People do meth all the time, too. Doesn't make it a good idea. :nono:[/b]

That made me LOL :laugh:


And +1 to everything else TireGuy said...If you know something shouldn't be done, mainly for safety reasons, why would you justify trying to do it with "it's done all the time"? You seem like an intelligent enough person to know better, so I'm hoping you were just looking for reaffirmation of your suspicions?

 

People do meth all the time, too. Doesn't make it a good idea. :nono:

In fact, the stresses that autocrossing put on a tire will only magnify the negatives associated with doing this, which makes it worse than doing this on the street. Seriously, match the tire size to the wheel you have, and you'll get the max benefit.[/b]

I disgree. Half and inch should not make that much of difference. On the SCCA forums there are are quite a few drivers who vary a bit from the recommended rim width.

 

I disgree. Half and inch should not make that much of difference. On the SCCA forums there are are quite a few drivers who vary a bit from the recommended rim width.[/b]

w/e. If everybody else is doing it, it must be okay.

 

Now I know why I only post in the Mazdaspeed6 or Dyno/Track forums.

While I appreciate your thoughts they are not in response to the questions I asked. If you do not compete in motorsports then you do not understand, that competitors will do anything to stay within the class rules while still being competitive and using every advantage available. In this case that is to fit the widest tire I can underneath my car without rubbing or rolling fenders. So if I want to win I need to do what everyone else is doing.

To quote a tire test article from Grassroots Motorsports Magazine and The Tire Rack (performed at the Tire Rack's headquarters)

"The conventional wisdom in stock class autocrossing is to stuff the widest possible onto the stock wheel. While this might seem counterintuitive when one considers the issues of tire and sidewall deformation, the concept has proven its worth time and time again. We regularly see 225 width tires shoehorned onto 5 inch wide wheels."

In this particular test they were testing tires on an RX-8 in 285/30/18 on the 18x8 stock wheels. The Hoosier A6 and Toyo R888 they used have a recommended rim width of 10.5-11.5 inches yet here they are (with the help of a nationally known tire retailer) fitting them and autocrossing them on 8 inch wide tires. However since tires do differ in actual size the Kumho V710's would not fit on the wheel without buckling. The V710's were found to be wider than the other two. They went down in size to a 245/35/18 V710.

 

Let me know where you'll be autocrossing and I'll make sure I'm not a spectator.

And why can't you roll your fenders? That doesn't make any sense at all.

 

Let me know where you'll be autocrossing and I'll make sure I'm not a spectator.

And why can't you roll your fenders? That doesn't make any sense at all.[/b]

You've got to be fucking kidding me. Show me one instance where someone has been injured because they did this? You are telling me that no one shows up at your event on tires that are put onto rims that are a little bit narrow?

As for rolling the fenders. Two reasons. My car is a lease and it is not allowed in the class I am in. What doesn't make sense about that?

 

You've got to be fucking kidding me. Show me one instance where someone has been injured because they did this? You are telling me that no one shows up at your event on tires that are put onto rims that are a little bit narrow?

As for rolling the fenders. Two reasons. My car is a lease and it is not allowed in the class I am in. What doesn't make sense about that?[/b]

No, because they aren't pussies and don't need to win in order to validate themselves. I've never noticed anyone running what I would consider too large a tire for a stock wheel.

Never knew that a fender roll would be considered a modification. How the hell does the come up in the tech inspection anyways? And you're concerned about your lease but you're autocrossing and can't roll your fenders? lmao. This is great.

 

sjdmp5, how about just work on becoming a better driver. That trumps all, not equipment.

 

Okay. You wanted us to answer your question.

I would say no, no one will have any experience with rubbing with that setup because most people tend to match their tires to their wheels. That tire/wheel combo will simply not net you the handling you are looking for. Wider is NOT always better.

On top of that, that 245/45 is also probably going to be taller than your factory setup, which also is the OPPOSITE of helping you in Auto-x. You're making it more difficult for the car to turn the wheels over by moving the moment arm farther out.

Ideally (for both auto-x and road-courses) you want a tread that is matched to the wheel, and MOST guys who actually track their cars will run a SMALLER tire than factory (lower height, that is) to give their cars more pickup, especially in the bottom end. And if I remember correctly, auto-x is ALL ABOUT low-speed power.

If you are going to run that 17-inch wheel, I would just run a 225/45 or a MAYBE a 235/40. These will fit the wheel and give you the gear-ratio reduction that will help you around the course.

And to quote for added effect...TRUTH is spoken here...

sjdmp5, how about just work on becoming a better driver. That trumps all, not equipment.[/b]

 

Okay. You wanted us to answer your question.

I would say no, no one will have any experience with rubbing with that setup because most people tend to match their tires to their wheels. That tire/wheel combo will simply not net you the handling you are looking for. Wider is NOT always better.

On top of that, that 245/45 is also probably going to be taller than your factory setup, which also is the OPPOSITE of helping you in Auto-x. You're making it more difficult for the car to turn the wheels over by moving the moment arm farther out.

Ideally (for both auto-x and road-courses) you want a tread that is matched to the wheel, and MOST guys who actually track their cars will run a SMALLER tire than factory (lower height, that is) to give their cars more pickup, especially in the bottom end. And if I remember correctly, auto-x is ALL ABOUT low-speed power.

If you are going to run that 17-inch wheel, I would just run a 225/45 or a MAYBE a 235/40. These will fit the wheel and give you the gear-ratio reduction that will help you around the course.

And to quote for added effect...TRUTH is spoken here...[/b]

First, I have several years of Solo2 (and Formula Ford circuit experience going back 15 years) experience in several different cars. I've competed in everything from a Miata to a 3-series BMW to my previous car, a Protege5. So don't talk to me about becoming a better driver, I am usually top 10 at our local events out of 70+ cars.

Second, so what if I lease my car and want to autocross it? I just haven't bought a Miata yet. I'm sorry I'm not the man the people at your local events are, business. You would have no idea is anyone is running a larger tire on their wheels because it's not obvious.

Third, the circumference of a 215/45/18 stock tire size and a 245/45/17 is with .2 of an inch. I am well aware that a shorter tire height increases gearing, this worked quite well on my Protege5. And there are people on this board who know a thing of two about Solo2 and are running 245 width tires on the MS6.

 

First, I have several years of Solo2 (and Formula Ford circuit experience going back 15 years) experience in several different cars. I've competed in everything from a Miata to a 3-series BMW to my previous car, a Protege5. So don't talk to me about becoming a better driver, I am usually top 10 at our local events out of 70+ cars.

Second, so what if I lease my car and want to autocross it? I just haven't bought a Miata yet. I'm sorry I'm not the man the people at your local events are, business. You would have no idea is anyone is running a larger tire on their wheels because it's not obvious.

Third, the circumference of a 215/45/18 stock tire size and a 245/45/17 is with .2 of an inch. I am well aware that a shorter tire height increases gearing, this worked quite well on my Protege5. And there are people on this board who know a thing of two about Solo2 and are running 245 width tires on the MS6.[/b]

If you think you know everything, then why are you asking for people's opinions? Also, you can always become a better driver. Are you satisfied with just being in the top 10? You're a loser in any place but 1st, so it sounds like you have some work to do.

 

If you think you know everything, then why are you asking for people's opinions? Also, you can always become a better driver. Are you satisfied with just being in the top 10? You're a loser in any place but 1st, so it sounds like you have some work to do.[/b]

I don't think I know everything at all. WHICH IS WHY I AM ASKING. There are people on this board running a similar size and I am trying to ask them about their experiences with a car that isn't autocrossed often. And that is top 10 OVERALL. I don't care if you are Lewis Hamilton, you won't end up coming in first in a stock car when there are all out race cars competing too. The car that comes in first at our local events is a caged, supercharged 1700 lb AE86 that is made from carbon fibre and fibreglass! No Mazda short of a supercharged Miata that comes out can ever beat him.

 

First, I have several years of Solo2 (and Formula Ford circuit experience going back 15 years) experience in several different cars. I've competed in everything from a Miata to a 3-series BMW to my previous car, a Protege5. So don't talk to me about becoming a better driver, I am usually top 10 at our local events out of 70+ cars.

Second, so what if I lease my car and want to autocross it? I just haven't bought a Miata yet. I'm sorry I'm not the man the people at your local events are, business. You would have no idea is anyone is running a larger tire on their wheels because it's not obvious.

Third, the circumference of a 215/45/18 stock tire size and a 245/45/17 is with .2 of an inch. I am well aware that a shorter tire height increases gearing, this worked quite well on my Protege5. And there are people on this board who know a thing of two about Solo2 and are running 245 width tires on the MS6.[/b]

1 - This ties into the third point you make, but if you have this experience and you know of these people with the speed running 245/45s, why did you create this thread for information you already know where to find?

2 - There's nothing wrong with leasing a car and autocrossing it, to me. But it sounds like you're using that as an excuse to avoid fender rolling when you know...you're autocrossing, lol. And you're talking about RPM springs that may or may not be on your car? I dunno. And I look at people's cars all the time, ask them about their wheel/tire setups and I know wheels pretty damn well.

3 - See #1 again

 

Now I know why I only post in the Mazdaspeed6 or Dyno/Track forums.[/b]

is that because you're an asshole just like most other speed drivers on this forum?

If you're not gonna listen to the advice, don't ask for it. Its a bad set up, and tireguy knows what hes talking about, so I would tend to listen to him if I were you. a 225 stuffed on a 5" wheel? fuck that.

 

If you do not compete in motorsports then you do not understand[/b]

My other car.

http://www.cardomain.com/ride/784788

Not that it matters.


If I thought stuffing a wider tire on a skinny rim gives you an advantage, I would have said so. I've autocrossed and road raced for many years. Won many class events and class championships (whoop-de-do!). Take my advice or not, I don't care. I was just trying to help you out.

 

I also have competed and do compete in motorsports. I also have placed very well in solo2 events, hell, I won my class my first time out. In auto-x, the driver is key. I also have driven in a few NASA/HPDE events and have numerous friends who drive in them religiously. I have picked their brains for tips on car set-up, turn-in points, breaking zones, to learn as much as I can.

In all of that, I have never heard any of them recommend anything other than running a properly fitted tire.

As has been stated, you asked for an opinion, opinions were given, and you chose to shit all over them. Don't ask a question if you aren't going to like the answer...period.

 

Well, you are all entitled to your opinions even though you decided to flame me for it and call speed6 owners.

As for those of you that don't seem to think serious SCCA Solo2 competitors do these here are a few threads of many.

http://sccaforums.com/forums/thread/155698.aspx

http://sccaforums.com/forums/thread/147368.aspx

http://sccaforums.com/forums/thread/53778.aspx

 

Well, I just read one of those links and it seemed like there was quite a bit of discussion regarding this issue. Some making comments like many here and others advocating the opposite.
My take is I don't think many, if any, MS6ers on this board have run wider than spec'd. tires on wheels. If I were you, I think the only way to find out is to try it out.

 

is that because you're an asshole just like most other speed drivers on this forum?[/b]

Speaking of assholes.

So, let me get this straight, mr. tough guy from "Hard Hittin' New Britain, CT" :sarc: , because we have MS6's were assholes now?

Should we split up this forum into two sides then too? You know, I heard some shit about those asshole 6i guys too...maybe we need three forums... :sarc:

Well, since we are generalizing, most people from CT are a bunch of shit heads. It's true, I read it on a forum...

BTW -

You were all hot and bothered defending Mark from TopPSI...are all those refunds sent out now?

 

Quick question: Which class are you competing in?

As far as the lease goes, dealers aren't particularly vigilant about cars with rolled fenders at lease end.

 

Quick question: Which class are you competing in?

As far as the lease goes, dealers aren't particularly vigilant about cars with rolled fenders at lease end.[/b]

Either stock class (DS) but I can't do springs I could run in one of ST classes (then I can do springs) but I am also in Canada so our rules are slightly different as to what we can and can't do. If that helps. Next year we might end up running the full SCCA ruleset. I think I am going to try run a 235/40/17.

 

I am a speed guy, does that make me an asshole? i thought i was an asshole because I curse at small children and fart in small crowded spaces? Wow all these years I thought i was an asshole but it didn't become official until last October when I purchased my Speed6.....just kidding, thought it was funny when he said all Speed guys are assholes. BTW SJDMP5 , always remember " If you ain't first, you're last".

 

I'm gonna buy a second speed six so I can be double the asshole the rest of you assholes are...

 

Got all you guys beat. I got a speed6, a Vette AND I'm from Ct. Triple Asshole.