Originally Posted by PowderBoyDTC
The bottom line is, new tires on the front will encourage understeer(which is much easier to correct), while new tires on the rear encourage oversteer(not so easy to correct).
What I said I thought when I said
Originally Posted by CrystalPistol
When only putting two tires on, I always put the newest ones on front unless the other two on the car are very nearly new also. Just easier to chase new treads at 130 with them up front where I'm steering, than have them move about out back and me chasing them in a curve. New, tall treads do that.
To expand ....
Tire shops, distributors, retailers, etc .... deal with customers who buy tires for their private autos and presumably drive lawful speed limits.
When buying only two tires, of equal size, it makes sense to put the newest tires on the rear in such cases as their biggest threat to life and limb is a flat on the rear causing sudden and drastic oversteer
, or hydroplaning due to less tread depth also leading to sudden and drastic oversteer
in a heavy rain, or a casing failure due to just plain "OLD" rotted tires that are 12 years old maybe on this "Sunday Driver" also leading to sudden and drastic oversteer
which will happen when that sidewall fails. Putting the newest tires on the rear minimizes the risk of either, it's much easier for a driver to handle a sudden case of understeer when it's the front tire that has the flat or suddenly slips in rain or blows out from failure. May still wreck, but chances are better that way ... when it's a steer tire that fails or slips.
I was not talking about putting tires two at a time on a car used thusly. It's a police car
operated by a trooper on back roads and interstate alike, some times at high speeds. I know by looking at my tires every day I work which are worn most, I check the pressures, and when it's raining I keep in mind what the trires are like because I looked at them that day too. I adjust
my driving to the weather and my equipment.
I also know from 30 years experience as a trooper that most flats happen on the rear as often the nail or screw was lying on the road when the front tire rolled over it and kicked it up and the rear tire caught it in the tread. There was that night in 1979 up on I-95 when I ran through "53 kajillion" 16 penny nails dropped by a truck in the rain and I picked up 6 nails in the left rear and 5 in the right rear and NONE in the front tires. Looked like freeking pine needles on that wet interstate. Took the DOT hours to clear as I stood ouit there in the rain with flares routing traffic around using exit and on ramps. The Firestone tires I had didn't go flat, but they were low when I got to the shop, all 4 were new which means a 16 penny nail knows no difference. I put two more new ones on in their place.
Running two 235/55-17 Goodyear RS-As with 4 or 6/32 on the front and two brand new 235/55-17 Goodyear RS-As with 10/32 on the rear, all 4 at 44 PSI cold, at 100+ whether in a quick lane change on the big road or when I pitch it into that next curve on this two lane road is a good way to find my arse leading with some drastic OVERSTEER.
No, when that "officer needs assistanc now" or other bona fide emergency call comes my way, or if I just turned on one running wild .... then I want
the two new 235/55-17 Goodyear RS-As with 10/32 up front, and them two 235/55-17 Goodyear RS-As with 4 or 6/32 on the rear end where they'll squirm around less than those new ones
We replace tires when they reach 3/32, have to watch those dollars you know. On my personal cars, cars that the wife drives, etc .... I shop for tires generally at 4/32 and keep them rotated and evenly wearing, and I don't have a problem with a plug/patch like I use, have never had one fail in near 40 years driving. I just do not like to use them on the police car unless I absolutely have too and then I'll use a plugged tire for a a speare just until I can get a new tire.
Please pardon any mispellings.