18x10.5 z06 wheel tire question. - Third Generation F-Body Message Boards

dust3r · 05-29-2009, 05:37 PM

Hi,
I was planning on running 275/40-17s on the front (17x9.5 wheels) and 295/35-18s on the rear (18x10.5 wheels), but wanted to know if running 275/40-18s on the rear wheels would look funny (stretched)? I know they are about an inch taller than stock, but that doesn't bother me. The 275/40-18s are significantly cheaper than the 295/35-18s.

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//<86TA>\\ · 05-29-2009, 06:56 PM

get the 295's. they will cost more but will look a thousand times better. They will also provide some curb rash protection for the rims.

1988-305-tbi · 05-29-2009, 07:13 PM

uhhhhhhhhhhh... bad advice..... this would give the front tires more sidewall than the rears, the car will look bad with more tire on the front than rear, not to mention that it would upset handling and cause massive oversteer, with the rear tires being more responsive than the front, plenty of rear steer, but the 275 would be to stretched to look good on a 10.5" wheel

sailtexas186548 · 05-29-2009, 07:48 PM

Quote:

Originally Posted by 1988-305-tbi

uhhhhhhhhhhh... bad advice..... this would give the front tires more sidewall than the rears, the car will look bad with more tire on the front than rear, not to mention that it would upset handling and cause massive oversteer, with the rear tires being more responsive than the front, plenty of rear steer, but the 275 would be to stretched to look good on a 10.5" wheel

UHhhhHHh... try to know what your talking about before you make yourself look like an idiot. i have the 17/18 staggered set up, with 40 front and 35 rear sidewalls, it looks GREAT - really completes the staggered look. oversteer? are you serious? from 5mm of sidewall difference? the fact that teh fronts are narrower by 10mm should offset that anyways. and, my car(with dang near the same set up) under-steers like no other, it NEVER oversteers, sooo...

to the OP, yeah everyone is correct that the 275's are too small for the 10.5" wheels

1988-305-tbi · 05-29-2009, 07:55 PM

Quote:

Originally Posted by sailtexas186548

UHhhhHHh... try to know what your talking about before you make yourself look like an idiot. i have the 17/18 staggered set up, with 40 front and 35 rear sidewalls, it looks GREAT - really completes the staggered look. oversteer? are you serious? from 5mm of sidewall difference? the fact that teh fronts are narrower by 10mm should offset that anyways. and, my car(with dang near the same set up) under-steers like no other, it NEVER oversteers, sooo...

to the OP, yeah everyone is correct that the 275's are too small for the 10.5" wheels

the fact that you think it looks good and hanldes great is all i need to know, to never read another of ur post

sailtexas186548 · 05-29-2009, 07:59 PM

//<86TA>\\ · 05-29-2009, 08:14 PM

Quote:

Originally Posted by 1988-305-tbi

uhhhhhhhhhhh... bad advice..... this would give the front tires more sidewall than the rears, the car will look bad with more tire on the front than rear, not to mention that it would upset handling and cause massive oversteer, with the rear tires being more responsive than the front, plenty of rear steer, but the 275 would be to stretched to look good on a 10.5" wheel

i didnt take notice of the front setup the OP wanted, just the rear.

I will have to agree with you that running more sidewall on the front will look a little weird.

not sure what other options there are going here, unless you change the front to a 245/40/17, 1" smaller than stock, but the sidewall will match and the cost of width.

sailtexas186548 · 05-29-2009, 08:29 PM

Quote:

Originally Posted by 1988-305-tbi

the fact that you think it looks good and hanldes great is all i need to know, to never read another of ur post

hey STUPID, i dont know if you can read, but when i say "it under steers like no other", means it DOENST handle well, jeezus. plus your still wrong about it "oversteering" lol, and if you can honestly say a 1cm overall diameter difference in tire diameter is a HUGE OMG terrible look, why dont you look at some car's with the set up, like mine, and then rethink what your saying.

to the OP, im sorry to clutter the thread with this crap... but heres a pic of a 35 rear sidewall on an 18"rim and a 40 front sidewall on a 17" front rim, stock ride height (sagging maaybe.. lol)

excuse the dirt, had been sitting uncovered

1988-305-tbi · 05-29-2009, 08:59 PM

hey smart guy...
what size tires are on your car??? you only gave the aspect ratio

if the less sidewall on the rear tires looks so good and doen't hurt performance i wonder why auto makers never put a shorter sidewall tire on the rear/ lighter end of the vehicle.

wait i think i maybe wrong, nissan offers a couple nice little coupes, NISSMO tunned, i believe that have a shorter rear sidewall tire, they do it for a reason though, whats that silly little thing that all the kids like to do with rear will drive cars..... oh yeah it's tunned for DRIFT, the rear end breaks loose before the front

sailtexas186548 · 05-30-2009, 03:57 AM

Quote:

Originally Posted by 1988-305-tbi

hey smart guy...
what size tires are on your car??? you only gave the aspect ratio

if the less sidewall on the rear tires looks so good and doen't hurt performance i wonder why auto makers never put a shorter sidewall tire on the rear/ lighter end of the vehicle.

wait i think i maybe wrong, nissan offers a couple nice little coupes, NISSMO tunned, i believe that have a shorter rear sidewall tire, they do it for a reason though, whats that silly little thing that all the kids like to do with rear will drive cars..... oh yeah it's tunned for DRIFT, the rear end breaks loose before the front

since we are talking about sidewall, and comparing a 40 on a 17" rim in the front with a 35 on an 18" rim in the rear, all that you need to know is aspect ratios, but since you apparently don't understand that:

245/40-17s on the front and 275/35-18s on the rear

same as the OP was asking about, but not as wide.

again i said that the handling is NOT GOOD, it UNDERSTEERS, READ.

and the drift comment, I NEVER SAID IT WAS GOOD FOR HANDLING, AND MY CAR, WITH MORE SIDEWALL UP FRONT IT UNDERSTEERS SEVERELY. i have auto crosed it 4 times now, i speak from testing on a clean, concrete "track" if you will. and now your comparing a 3rd gen to a 350z? i dont think they are as nose heavy, if at all, like a 3rd gen soooo... thats cool....

ONCE AGAIN, the handling is not good, it understeers, just like i said in my first post, and my second one... so i donno wtf you are saying i said it handles sooo great for

last time, READ.

oh, and appanently the stock 350z had understeer problems, like my car has... and the nissmo was designed to fix some of that... so the larger side wall up front does help correct understeer possibly, but, i WASNT arguing that with you anyways, i just said my car understeers.

paul_huryk · 05-30-2009, 11:34 AM

If it were me, I would go 275-40-17 all the way around. If you want the same sidewall, but a little more rim (your eyes probably wont be able to tell), go 275-40-17 in front and 275-40-18 in the rear.

$750 L98 · 05-30-2009, 12:16 PM

I bought these wheels a while back for my 1995 vette, 275 will buldge if you get one with enought sidewall to even fit. My 285/35 HTRZII look like balloons on them, they don't even sit flush with the outside of the rim.

295, or 315 for the 18x10.5 would be best, definitely not less lol

1988-305-tbi · 05-31-2009, 01:48 AM

Quote:

Originally Posted by sailtexas186548

since we are talking about sidewall, and comparing a 40 on a 17" rim in the front with a 35 on an 18" rim in the rear, all that you need to know is aspect ratios, but since you apparently don't understand that:

245/40-17s on the front and 275/35-18s on the rear

same as the OP was asking about, but not as wide.

the funny part you missed is that 245/40/17 is a 24.7" tall tire on a 17" rim which = 7.7" of sidewall,

275/35 has a height of 25.7" on an 18" rim, so the sidewall on the rear is also 7.7".

so you have the same overall sidewall sized tires but the rear is just over 1" wider than the front, which by the way will cause UNDERSTEER, LIKE YOU HAVE!!!!!!!! "Smart Guy" so no you arent even runing a shorther rear tire sidewall than the front, and if you could do math you would have already know that

sailtexas186548 · 05-31-2009, 02:09 AM

Quote:

Originally Posted by 1988-305-tbi

the funny part you missed is that 245/40/17 is a 24.7" tall tire on a 17" rim which = 7.7" of sidewall,

275/35 has a height of 25.7" on an 18" rim, so the sidewall on the rear is also 7.7".

so you have the same overall sidewall sized tires but the rear is just over 1" wider than the front, which by the way will cause UNDERSTEER, LIKE YOU HAVE!!!!!!!! "Smart Guy" so no you arent even runing a shorther rear tire sidewall than the front, and if you could do math you would have already know that

nice rounding, do the math without rounding, there is a sidewall difference of 3.5mm, the front having 3.5mm more sidewall, and if you refer to my previous post, i said:

Quote:

Originally Posted by sailtexas186548

from 5mm of sidewall difference

so yes there i have a larger sidewall in front, like i said, i was 1.5 mm off in my estimation, wow do two quick burnouts and its up to 5mm lol.

paul_huryk · 06-02-2009, 01:09 PM

Quote:

Originally Posted by 1988-305-tbi

the funny part you missed is that 245/40/17 is a 24.7" tall tire on a 17" rim which = 7.7" of sidewall,

275/35 has a height of 25.7" on an 18" rim, so the sidewall on the rear is also 7.7".

so you have the same overall sidewall sized tires but the rear is just over 1" wider than the front, which by the way will cause UNDERSTEER, LIKE YOU HAVE!!!!!!!! "Smart Guy" so no you arent even runing a shorther rear tire sidewall than the front, and if you could do math you would have already know that

245-45-17 is the same overall diameter as stock, so is a 275-40-17, 245-40-18, and the 275-35-18... Pure math.

You know - you can tune understeer out with different spring rates and sway bars. You should always put as wide as a tire as you can and then tune it to have the balance you want...