Has anyone on here (4th gens) run a 14 sec quarter on 18 inch rims?

 

Yeah, why do you ask?

 

I also wanna know why? I dont have a 4th gen but I have a 6th gen and I plan on staying with 18s instead of going large like most 5.5 and 6 gens do. I just hope i can get good times staying on 18s.

 

Yes, I have, I have run 14.5s with my 18's.

 

I'm guessing that a 10-pound difference per rim could be significant (compared to 15"). Maybe 2, 3 tenths, anyone got a more accurate idea of the difference?

 

10lbs per corner would probably slow you by .1 seconds and 1mph. That's about exactly the difference I see when shedding 8lbs off the drive wheels, so 2 extra lbs wouldn't be much worse.

 

shedding about 40lbs of rim/tire wieght gave me .25 in the 1/4

 

I've ran 14.6s with my 17s in near 100 degree weather, so I'm pretty certain you can hit 14s with 18" rims assuming you're pushing enough power. If you're an auto then you may have problems. I guess it all depends on the weight of the rims too. My 17" combo weighs no more than my stock 15" combo.

 

OK I have 18" inch Konig Verdicts (26 pounds). I am 5 speed with tons of mods.

I went to the track on Sunday on a very bad day. The day was bad because they had hundreds of muscle cars and I only got to run two times. It was also my first time at the track.

Well my first run which was terrible, I trapped at 85 MPH (On 18's). My second run which was only a little better i ran on 15 inch wheels with improperly warmed up drag radials and I trapped @ 94.73 MPH (60 foot = 2.6!!! bad bad)

 

you're not going to lose 10mph from having 18s on your car. something else happened on that run.

 

Yeah thats what I hope. It was my first time and I was up against an 11 second Camaro. I didn't even understand how the light system worked.

I spun through first and wheel hopped through second! I couldn't even hear my tires or car because the camaro was so loud (Which was at the 1/8 mile mark by the time I left the line hahah).

 

>>10lbs per corner would probably slow you by .1 seconds and 1mph. That's about exactly the difference I see when shedding 8lbs off the drive wheels, so 2 extra lbs wouldn't be much worse.<<

Yeah but those are only the drive wheels. So instead of the 16 lbs less you're talking about it's more like 40lbs, so I30Mike's .25 gain makes a lot of sense.

I'm actually going to save 10 pound per rim and 3 lbs per front tire with my combo (but my rims were already heavy, over 20 pounds), so that's 46 pounds of upsprung weight off the car. I ran a 15.09 bone stock (and I am a slightly better driver now), so I'm expecting 14.80's but anything below 14.99 will make me smile.

 

It's been tested by a number of people on this board, shedding weight off the non drive wheels (rear wheels) doesn't have anywhere close to the same effect as shedding weight off the drive wheels. Because the engine isn't actually turning those wheels, it's just basically dragging them along, shedding 10lbs off the back wheels is just like taking 10lbs out of the car, it's not nearly effective as losing 10lbs off the weight of the wheels the engine has to actually turn.

 

Yep. Neal was there when I shed almost 40lbs off the rear and did multiple before and after runs. The difference was ever so slight, and could have been due to just the sheer weight reduction or many of the other variances such as 60' and heat soak. There was not enough of a difference to account of 40lbs of unsprung weight.

 

on my 4th gen with 18's, intake, y-pipe, i was running mid 15's, couldn't get them b*tches to spin at all. dropped on the 15's and low 15.1 where there. Took the 6th gen to the track with 20's and got 14.7, took the front's off and put the stock 18's on and was hitting 14.3. I noticed with the larger rim i was able to trap 3mph quicker but was .5 slower.

 

c-max ran 13.5 with his 18's and 12.9 with stock 16's and drags. so it makes a big difference. i personally believe 15's are the best small and light for the 1/4.

 

The drag radials probably accounted for a few of those tenths he shaved off.

 

interesting statement, i wonder if they have 18 in drags. i know for sure the drags was the most significant thing to my better times, the traction was almost instant compared to the constant spinning of the 18,s. plus with just the 16 and reg tires i couldnt run past a 14 sec pass.60' foot was awful. hey what up maxboogie give me a holler when you can.

 

they have 18 inch DR's but they are wide as f*ck

 

I went from a best of 15.2 with intake only to a 15.5 with 18s, y-pipe, and exhaust with similar 60'. Trap speeds dropped from 91 to 89.

I went out that night hoping to hit 14s but went the other way instead.

when I take my 18s off for the winter I'm going to weigh them and see how heavy they are.

 

the weight is a factor but so is the size. the car will need more power to turn 18's compared to 16's. thats why professional's use 15 with drags you get maximum performance out of those.

 

I ran a 14.3 on 19's(pimpin all the way down the track ). What do you guys think my time would be with the millinea wheels or something similar in weight?

 

Get millenia wheels and DRs and I wouldn't be surprised if you hit 13.9.

 

you have some serious power pulling those 19's that fast. i would have to imagine mid 13's with 15 in on.

 

You really think they are hindering me that much

Btw what's been up, hadn't seen you post in awhile. How's the car running

 

He's S/C'd. . .that's why damn, I didn't catch that.

 

DonSupreme what's your mods

 

whats up chris. i have the baddest luck after my last rebuild i went to springvalley where i ran against mecca and a neon sr4-t. i snapped my crank gear tooth and the timing went and bent every valve in the car. it cost me about 1,900 in parts and the repair shop did the work for free. unfortunatley in the meanwhile they vandalized my car and stole everything in it so i have been quite busy. the engine has been completely modified again and should be back on the road next week.

 

A bunch...

Stillen V2 (3.6" Pulley)
full 2.5" exhaust (Stillen)
Flywheel (Stillen)
6 Puck Clutchnet (*no power obviously)

I guess that all the power adding mods I have. A bunch of other crap.

P.S. Anyone selling a 3.33" pulley?

 

exactly when i run on my 18's i run a lower 1/4 mile but still have a decent trap. with the 16 i run a quicker 1/4 and actually a lower trap. with the 18's i ran a 13.5 and with the 16's a 13.1, thats without nitrous.