New Tires

[nfs_riffle]

Hello, my 89' Grand Marquis needs a new pair of shoes. Right now I have the stock wheels and it got 215/70r15 tires. Now I may be changing sizes for monetary reasons and I was wondering if changing to 225/75r15 was a bad idea (ive got a real good deal on those ones). Tell me your two cents so that I dont make a bad purchase. Thanks a Lot

Alexandre

[mrltd]

speedo will be a tad off. It will read slower than the car is going. Should not have any issues with fitment though.

[1987cp]

This thread on handling mods ended up containing some interesting discussion about tires, including some quick compare-and-contrast posts about particular models: http://www.grandmarq.net/vb/showthread.php?t=22499

[crown vic muscle]

i would run up to a 235 series tire, but i like the wider look myself.

[Nathan in MI]

225/75s have an awful lot of sidewall...I had them on the front of my car for awhile and it didn't handle as well as it did with the 225/70s.

[Archangel]

I have 235/75R15s all around, I'm happy with them, but they are the LT-class and as such are stiffer than the P-class tires most of y'all run. For a car that's driven daily and could use some better handling I'd go for 235/60-15 tires, but for a cruiser-type vehicle taller tires are great.

[Lincolnmania]

find a set of 16" wheels and get 4 225/60/16's

[Glen]

I have 235/70 15's and like them. The speedo is of a little, when it reads 60 I am going 63 by the radar things on the side of the road.
When I need new ones I will go with what Scott said:"find a set of 16" wheels and get 4 225/60/16's"

[nfs_riffle]

Thanks for your answers, right now im not going to replace the wheels, but i will look out for different sizes.

And thanks for the link, really helpfull

[1987cp]

On the size thing, most manufacturers advertise basic specs like the tire's overall diameter and what range of wheel widths are recommended. Those can help you choose a wider/narrower tire if desired, or at least make an informed choice about how tall a tire to run.

[88Vic]

I have 235/75/15's on my truck and they do bubble out a bit on the bottom because they're P class and my truck is a fatty.

Hey can someone tell me what all the tire size on the 4th on listed means? I'd like to fit those on my truck. I wanted that tire in 255/70 on my wheels but those aren't made in that size. Will those 31" tires work?

http://www.tirerack.com/tires/Sizes.jsp?make=BFGoodrich&model=All-Terrain+T%2FA+KO

[1987cp]

I have 235/75/15's on my truck and they do bubble out a bit on the bottom because they're P class and my truck is a fatty.

Hey can someone tell me what all the tire size on the 4th on listed means? I'd like to fit those on my truck. I wanted that tire in 255/70 on my wheels but those aren't made in that size. Will those 31" tires work?
http://www.tirerack.com/tires/Sizes....rrain+T%2FA+KO

That's the tire's nominal dimensions in inches. For some reason larger light truck tires and many racing tires are listed in inches instead of metric sizing. If you've got a 7-9" rim the 30.7" overall height is appropriate, you can run that tire. Keep in mind that this tire is probably about two inches taller than what you have now, so a different speedo gear is probably in order.

(techless tip: click on the "specs" link to get this info for any tire ... here's the one for the All-Terrain T/As: http://www.tirerack.com/tires/Spec.j...irePageLocQty= )

[torquelover]

On the size thing, most manufacturers advertise basic specs like the tire's overall diameter and what range of wheel widths are recommended. Those can help you choose a wider/narrower tire if desired, or at least make an informed choice about how tall a tire to run.

Tire weight is also listed, which really makes a difference due to the rotational mass and unsprung weight.