345 Rear Tires and 285 Front?

[Tyonidus]

You guys must love understeering cars or only care about look and not handling
The Mustang is a front heavy car with terminal understeer ( except for shelby or PP2)
305 squared set up is what give handling (and look)

meh personal preference. There are no tracks around me that have open track days so as long as she rides and looks good and pulls good on straight roads I don't care for the near future. Maybe one day!

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[WildHorse]

 

[m3incorp]

OP there are people that run the sizes that you are wanting but of course there are more people on this forum that do not run those sizes. This might be one of those cases where you have to try it yourself. All tires are not the same widths, even though they may be listed as the same on the sidewalls. Michelin tends to run wider than most.

What wheels and offsets are you going to have on the car; this does make a difference.

 

[m3incorp]

Not a 345 on a 19" wheel but you can see how close I am with a lowered car. I'm running 305/35R20 on rear and 275/35R20 on fronts. I don't think I could go any wider on fronts or rear without rubbing at my ride height. I have no rubbing going over speed bumps.

I forgot to mention, that unless you are laying on the ground under the car, you can't actually tell how wide they are from rear....unless of course you have them poking past the fenders and in that case, you will want a really stiff suspension to keep from contacting your fenders on big bumps or dips.

 

[Andy13186]

I tried test fitting some 345s 30 20's that werent mounted on a wheel, they seemed too big but may have worked if you are ok with the tire sticking like an inch or more past the fenders, and if your rear is high enough up for it to not hit the fenders 345's left, 305's on the right :

Ended up not keeping the tires although it would have looked pretty awesome probably, just a weird fitment.

I have 295 35 20s on the front and 315 35 20s rear now

 

[Grintch]

Big rear tires + small front tires = lots of understeer

Getting 345's on the back is gonna take some work as well.

 

[EFI]

Big rear tires + small front tires = lots of understeer

You should tell Viper ACR or C7Z06 engineers that their multi-million track focused projects have the wrong tire size because they are heavily staggered front to back.

 

[luc]

You should tell Viper ACR or C7Z06 engineers that their multi-million track focused projects have the wrong tire size because they are heavily staggered front to back.

The manufacturers and therefore engineers know exactly what they are doing. They, in purpose, design cars that are understeering because it’s considered safer for the average driver
Normal reaction if you enter a turn too fast and the car push, is to lift and even maybe brake. Either of those 2 actions will transfer weight to the front and therefore front tires will gain traction and the car will turn
Couple more points: I do have a Viper and the first things you do on a viper if you want to track it, is to put much larger tires in front and you are much faster
Did you ever saw a rear engine car ( Porsche) that obviously has a rear biased weight, put bigger tires on the front and smaller on the rear ????
It’s very simple physics, for optimum handling, the side is the car that weight more need bigger tires than the side that weight less

 

[Tyonidus]

Big rear tires + small front tires = lots of understeer

Getting 345's on the back is gonna take some work as well.

Does it not also require work to get 305's to work in the front?

 

[luc]

Does it not also require work to get 305's to work in the front?

Depend if you want a squared and therefore rotable set up
You can either get wheels with different offset for front and rear and it’s just bolt on but you can’t rotate or you need 25mm spacers and extended front studs and you can then use wheels with the same offset front and back

 

[silverbullet85]

Nitto 555r 2s 345 30 r19 with mps4s 275 35 19 as far as understeer no fucks given, handles just fine for street duty I don't autocross. The car has 1 inch drop springs, had to slightly clearance upper rear shock mounts but if I had proper rear camber it would be fine. Right now it has stock camber and stock alignment which will be fixed eventually.

 

[luc]

Nitto 555r 2s 345 30 r19 with mps4s 275 35 19 as far as understeer no fucks given, handles just fine for street duty I don't autocross. The car has 1 inch drop springs, had to slightly clearance upper rear shock mounts but if I had proper rear camber it would be fine. Right now it has stock camber and stock alignment which will be fixed eventually.

Some people, obviously not everyone, care about handling more than look

 

[Tyonidus]

Some people, obviously not everyone, care about handling more than look

How many times have you tracked your car? At what track? I would love the opportunity to do so but I'm fairly broke and that does not seem like a poor person activity. There are no tracks that will let you just drive on them in my state without being a member of some super-exclusive club that's very expensive to join.

 

[luc]

How many times have you tracked your car? At what track? I would love the opportunity to do so but I'm fairly broke and that does not seem like a poor person activity. There are no tracks that will let you just drive on them in my state without being a member of some super-exclusive club that's very expensive to join.

Track days are between $200 to $400 per day depending on track, time of the year and organization
You have plenty of organizations that are very cheap and and easy to join
I can recommend you a few if you tell me where you are
But you are right, as a rule it is an expensive hobby. Save for autocross which is very cheap

 

[silverbullet85]

Some people, obviously not everyone, care about handling more than look

I would say that most people don't, the same way most people with lifted trucks don't go hard core offroading all the time ( or ever ) It handles fine for me it's a street car if anything it will be at the drag strip occasionally, if I was going to autocross or go to a racetrack I would set my car up accordingly. I like the look of my car and the traction I get. To each his own.

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