So I got two new tires for the Mazda 5 today

Synchros shot? Weird noises while shifting? Not sure what needs to be replaced?
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Re: So I got two new tires for the Mazda 5 today

Post by Rope-Pusher »

watkins wrote: Wed Jun 02, 2021 4:58 pm So you're saying that a broken and undermaintained car doesn't operate at peak performance? What a surprise!
No, it's not about peak performance. It may even be capable a a quicker lap time on a certain race course. It's about changing how the handling is balanced. Maybe it was predominantly understeering before, but with the cracked spring coil it's taken to oversteering.
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Re: So I got two new tires for the Mazda 5 today

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Rope-Pusher wrote: Wed Jun 02, 2021 9:23 pm
watkins wrote: Wed Jun 02, 2021 4:58 pm So you're saying that a broken and undermaintained car doesn't operate at peak performance? What a surprise!
No, it's not about peak performance. It may even be capable a a quicker lap time on a certain race course. It's about changing how the handling is balanced. Maybe it was predominantly understeering before, but with the cracked spring coil it's taken to oversteering.
So I don't have to replace the broken spring if I just find the right race course, or for practical application, only make left turns, or right turns, as the case may be. :lol:
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theholycow wrote:Why in the world would you even want to be as smooth as an automatic? Might as well just drive an automatic...
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Re: So I got two new tires for the Mazda 5 today

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I know a guy whose neighbor's brother-n-law wrenches for a NASCAR team and he said that's called tuning the chassis. Ya see, you can only get so far by tuning the engine. Then ya gotta tune the chassis. You set the car up so it wan't to turn left and then, as the speed increases it will lap the track with no hands on the wheel.
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Re: So I got two new tires for the Mazda 5 today

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Rope-Pusher wrote: Fri Jun 04, 2021 10:09 pm I know a guy whose neighbor's brother-n-law wrenches for a NASCAR team and he said that's called tuning the chassis. Ya see, you can only get so far by tuning the engine. Then ya gotta tune the chassis. You set the car up so it wan't to turn left and then, as the speed increases it will lap the track with no hands on the wheel.
Autonomous race car?
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theholycow wrote:Why in the world would you even want to be as smooth as an automatic? Might as well just drive an automatic...
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Re: So I got two new tires for the Mazda 5 today

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So the quote for new rear springs is $385 parts and labor. I am "fixin" to "spring" for it as soon as I can get my wife to "part" with the van for a day. Also there is a rubbing noise in the front so they can check that out, and while the wheels are all pulled off, may as well get a rotation. Only 3000 miles on these new Cooper tires and the fronts are around 7/32 tread while the rears are around 8.5/32. What is the tread depth on a new tire? But you can see if the fronts are already 1.5/32 ahead of the rears, this van is a tire eater, or could the broken spring be part of the problem? I remember the last van was a '99 Plymouth Voyager and I don't recall having excessive tire wear like that. Maybe that old rubber-banded SOHC 4 popper was not as gutsy as the Mazda's 2.3L chained DOHC 16-valve 4-popper, and so I am just tearing them up with my lead foot.

Evidence of lead foot in fuel mileage:

Daughter driving it: 27 mpg
Wife driving it: 25 mpg
Me driving it: 22 mpg :D
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theholycow wrote:Why in the world would you even want to be as smooth as an automatic? Might as well just drive an automatic...
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Re: So I got two new tires for the Mazda 5 today

Post by watkins »

Rope-Pusher wrote: Wed Jun 02, 2021 9:23 pm
watkins wrote: Wed Jun 02, 2021 4:58 pm So you're saying that a broken and undermaintained car doesn't operate at peak performance? What a surprise!
No, it's not about peak performance. It may even be capable a a quicker lap time on a certain race course. It's about changing how the handling is balanced. Maybe it was predominantly understeering before, but with the cracked spring coil it's taken to oversteering.
Peak performance in the category of on-road handling. One way or another, it's operating at less than the levels it was designed for.
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Re: So I got two new tires for the Mazda 5 today

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watkins wrote: Wed Jun 09, 2021 9:23 am
Rope-Pusher wrote: Wed Jun 02, 2021 9:23 pm
watkins wrote: Wed Jun 02, 2021 4:58 pm So you're saying that a broken and undermaintained car doesn't operate at peak performance? What a surprise!
No, it's not about peak performance. It may even be capable a a quicker lap time on a certain race course. It's about changing how the handling is balanced. Maybe it was predominantly understeering before, but with the cracked spring coil it's taken to oversteering.
Peak performance in the category of on-road handling. One way or another, it's operating at less than the levels it was designed for.
Much also depends on whose definition of Peak Performance, else people would not make modifications to their engines and suspension etc. to improve performance as they see it.

Maybe I should cut the other spring so both are the same, maybe even section them and lower the rear for the ghetto cruiser look. :lol:
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theholycow wrote:Why in the world would you even want to be as smooth as an automatic? Might as well just drive an automatic...
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Re: So I got two new tires for the Mazda 5 today

Post by potownrob »

ClutchFork wrote: Wed Jun 09, 2021 1:24 pm
watkins wrote: Wed Jun 09, 2021 9:23 am
Rope-Pusher wrote: Wed Jun 02, 2021 9:23 pm
No, it's not about peak performance. It may even be capable a a quicker lap time on a certain race course. It's about changing how the handling is balanced. Maybe it was predominantly understeering before, but with the cracked spring coil it's taken to oversteering.
Peak performance in the category of on-road handling. One way or another, it's operating at less than the levels it was designed for.
Much also depends on whose definition of Peak Performance, else people would not make modifications to their engines and suspension etc. to improve performance as they see it.

Maybe I should cut the other spring so both are the same, maybe even section them and lower the rear for the ghetto cruiser look. :lol:
picks ore it dint happen. isle bee using ex-ray vision to sea if you've bin cheating. 8) :)
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Re: So I got two new tires for the Mazda 5 today

Post by Rope-Pusher »

ClutchFork wrote: Fri Jun 04, 2021 10:21 pm
Rope-Pusher wrote: Fri Jun 04, 2021 10:09 pm I know a guy whose neighbor's brother-n-law wrenches for a NASCAR team and he said that's called tuning the chassis. Ya see, you can only get so far by tuning the engine. Then ya gotta tune the chassis. You set the car up so it wan't to turn left and then, as the speed increases it will lap the track with no hands on the wheel.
Autonomous race car?
I've driven on constant radius test tracks with banking. There is a stated speed for each lane where a neutral-handling car will stay in the lane with no drivers input to the steering wheel. As you drive faster, the car starts to move out of the lane and up the banking. As you reduce your speed, the car settles in down the banking at a lesser radius.
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Re: So I got two new tires for the Mazda 5 today

Post by ClutchFork »

potownrob wrote: Fri Jun 11, 2021 1:33 am
ClutchFork wrote: Wed Jun 09, 2021 1:24 pm
watkins wrote: Wed Jun 09, 2021 9:23 am
Peak performance in the category of on-road handling. One way or another, it's operating at less than the levels it was designed for.
Much also depends on whose definition of Peak Performance, else people would not make modifications to their engines and suspension etc. to improve performance as they see it.

Maybe I should cut the other spring so both are the same, maybe even section them and lower the rear for the ghetto cruiser look. :lol:
picks ore it dint happen. isle bee using ex-ray vision to sea if you've bin cheating. 8) :)
You won't need x-ray glasses. Just look for the sparks flashing out the back end as I grind the subframe dragging on the pavement.
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theholycow wrote:Why in the world would you even want to be as smooth as an automatic? Might as well just drive an automatic...
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