Ceasars Chariot

iTrader: (16)

I might have just made a mistake. I had Kumho Supra 712's on the max in 215/55/16 and i just put on some Toyo Proxes T1-S in size 225/50/16

I got the toyo and in this size thinking it would help me in traction and 1/4 mile times. But now im thinking I made a total wrong move. can anyone put some experience to this and let me know if the 225/50/16 is going hurt me.

So for handling is not as good in this tire size, the 215/55/16 is better on my car for handling. Anyways I would like to hear other owners experiences or information regarding this.

My thinking was a tiny bit wider tire and smaller wheel diameter would help, but now i dont know. I should have asked some of you pros out there first before this move. Again, i could be jumping the gun, but I find myself wishing I had stayed with the 215/55/16 in the Toyo or something more suited for the dragway.

KINGMAX

Well I put Dunlop SP8000's on (225/50/16) and those things grip like hell. As far as the track I have only had the chance to test them once and I was getting 60's that were consistantly 1/10 better than prior averages. This was at a track that I do not consider as grippy as the other track I go to. I am thinking I will be getting 2.1's and maybe even a 2.0 next time I go to Fayettville. The only downside of the softer compound tires is of course the wear out very quickly

Ceasars Chariot

iTrader: (16)

kingmax, so you are thinking I made a good move, that these tires will be just as good or slightly better. what do you think about using this tire size 225/50/16 with a 16 x 7.5 rim ? would that be even better or not ? This would be versus the 16 x 6.5 stock rim size. I was wondering if this would help the handling issue, which i seem to have lost some handling with the 225/50/15.

thanks

KINGMAX

Well, the wider rim will be a better fit for the tire. The guy that put mine on said they were a tight fit on my wheels but not too bad. How soft is the compound on those tires? The ones I have are very soft which gives me better traction...I can't remember the tread rating on the Dunlops. Like I said before my handling greatly improved when I got these tires so I am not sure why you are having a problem.

Nealoc187

iTrader: (23)

You are not going to see any gains in the 1/4 mile by getting another street tire. I run the same times on my T1-S as I do on my winter tires and my worn out all season radials. You are wasting your money if you are hoping for 1/4 mile gains.

96maximaman

even going from a worn out passenger tire to a new high performance tire

slickrick

iTrader: (12)

yeah when i put on my pilot a/s on my 2k2 over my crappy potenzas, theres no way for a possible better time? couldnt the tires help the 60'?

KINGMAX

my 60's got better, like I said by 1/10. The times were a little better than usuall (maybe also a tenth) considering the weather conditions.

Ceasars Chariot

iTrader: (16)

all you can do is try it out and see, but the thing is nealoc has done all this. i am making arrangments to switch out the stock 16's for 16 inch enkei rp-01 , weight reduction has to do something. either those or the kosei k1's ... with the 225/55/16 at least a wider rim will help a bit and when the tires wear out im not going with 225/50/16 again. those are all i can put into this project. i just got bit on an ecu a dude sent me, it was for an auto, so im working that on the side as well for the jwt ecu upgrade.

neal if you come back in here. what about:
kumho victoracer v700
yokohama a032r
br goodrich t/a drag radials

is that the kind of tires we need to pop on the front rims ? and what size, just normal for your rim ?

Nealoc187

iTrader: (23)

V700s and A032Rs are road race tires and thus have an even stiffer sidewall than Z rated tires (they are R compounds) and would probably result in worse launches than regular street tires would. If you want to see significant gains you need a designated drag tire like a drag radial or a slick. And if you are going to go with a designated drag tire why go half assed and get a drag radial when you can get a slick for the same price and be running 4 tenths faster. The only real advantage to a DR is that you COULD drive to the track on them if you had to/wanted to. Which you can't do with a slick. As you can see I'm urging you towards the slicks. If you want a street tire get whatever you feel like getting but don't expect any noticeable improvement from a regular street tire.

I30tMikeD

iTrader: (8)

I've pulled my best 60' times on some crap all season skinny tires.

Dave B

My best 60 foots have always been on my 15" sawblades with all-season H-rated rubber.


Dave

BEJAY1

iTrader: (19)

I've been studying this for a while and although my 1/4's aren't the greatest I do believe I understand the concepts (though not applied myself)

a) Lighter wheels are faster - and wider is not better. 6"-6.5" wide 15" rims prove the fastest times.

b) Lighter tires are faster - even more important than the wheels since these are on the very edge of rotational mass.

c) Narrow tires are better than wide - you gotta consider the contact patch shape. A 40-50 series profile tire is a short but wide patch made for cornering. Too short a contact patch hurts straightline braking. Same idea in reverse for acceleration, you want a longer contact patch parallel to the car direction. Topfuel dragsters have tall balloon tires that actually get skinnier when they get up to speed. Oh, and taller profile means less steel belts in the sidewalls, thus lighter weight (see b)

d) Tread & compound - as Neal said, slicks are your best bet. Then your speed rated softer performance tires, but not at the sacrifice of (b). Sounds like light all-season's do just fine for street tires. I'll know more on this as I take durometer readings and play with tire softener these next few months.

Dave B

Bejay-

Remember to shift to 4th too. I think that's really killing you. When I had the intake manifold, I improved my ET and MPH by simply grabbing 4th.

As indicated by the tach:

1-2 6500 (before fuel cut)
2-3 ~6200-6300
3-4 ~6100

I think if you shift like this you'll drop another .1+ and gain at least 1.5mph.


Dave