285/40-18 or 285/35-18

[er22bball0302]

which is my best bet 285/40-18 or 285/35-18 i thought the 40 might be a lil tall i have a cobra with soild axle and 17x9 front and 18x10.5 rear

 

[the98stang]

I think you'll want the 40 sidewall. Your going to feel every damn bump in the road with 35. Plus you can damage your rims more easily with a smaller sidewall.

 

[HoustonGT]

Get 285/35/18's. Thats the right sidewall for a correct speedometer reading and it'll look right.

 

[the98stang]

Get 285/35/18's. Thats the right sidewall for a correct speedometer reading and it'll look right.

It'll look right but ride like sh1t

You'll regret it man, trust me

 

[FivePointStang]

I have 295-35-18s and I think the ride is just fine.

You wont regret it man, trust me.

 

[mity2]

35, and u'll be happy.
But since your talking about 10.5", no u won't be happy. U wanna at least 295. Trust me, and don't ask how i know

 

[HoustonGT]

It'll look right but ride like sh1t

You'll regret it man, trust me

Mine rides fine. And i've had 35 sidewalls with a 275 and a 285 and on 2 different springs, Sportlines and H&R SuperSports. Ask the guys on this forum with 18's out back and i guarentee about 95% are running a 35 sidewall and its fine and is the correct diameter. Trust me man

 

[wms004]

It'll look right but ride like sh1t

You'll regret it man, trust me

I have 275/35/18's on 18x9's. BFG G-Force Sports.. Ride quality is just fine.

285/40/18 is way too tall, will make your car slower (unless you are supercharged), and will mess up your speedo.

Wade

 

[er22bball0302]

i have the predator tuner so the speedo is an easy fix i am actually thinking about selling my 18x10.5, my front rims are17x9 and getting 17x10.5 out back, tires are a lot cheaper for 17's if anyone wants to buy the 18's or the 17's too for that matter let me know, they have never even been mounted just sat in my room for 3 months... thanks for the input

 

[giddiupstang]

I went with 285/35/18s on the rears and mine ride just as smooth when I had the 245/45/17s, if not smoother. You gotta lowered it though if you haven't already to get the the full affect.

 

[Dope 97GT]

do not get 40 series tires you will hate yourself once you have them on your car. I had 285/40/18s on my 18x10" saleens with 255/40/18s in the front and the back tires were way bigger looking than the fronts. I ended up getting them dismounted and bought 295/35s and they look great.

If i were you i would find some 315/35s or somethin like that for your 10.5" rear.

 

[TrueBlue03]

35, and u'll be happy.
But since your talking about 10.5", no u won't be happy. U wanna at least 295. Trust me, and don't ask how i know

exactly. that 285 size is mity-style on 10.5" rim!
i wouldnt go any more narrow than 295 on a 10.5" rim.