psychoboy

i'm sorting out the suspension on my 3rd gen prelude, and i've had good luck with 195s, but i'm wanting more tire.

i've got a line on some 15x8s +36...and another guy has some take off 205/50s. measurement wise, i've got the room in the car for these, but i keep hearing 8 inch wheels are too wide for 205 tires.

anyone have an opinion on the fitment?

(. )( .)

wow..8 inch wide and a 205 tire wont be safe. you'll have to stretch them..which is a stupid idea. Cop the wheels and look for 215/50/R15 bruh

(. )( .)

maybe even 225/50/R15 would be wise

psychoboy

205mm is just a hair over 8 inches. should make for a pretty square sidewall, i would think.

toyomatt84

iTrader: (1)

205/50/15's are rated for 5.5" - 7.5" wide wheels. 215/50/15's are also rated for that size wheel width. 225/50/15 would be the narrowest tire you could safely fit on a 15x8 with that sidewall percentage.

psychoboy

so a 205 would perform properly on a wheel that's 2.5" narrower than the section width, but not on a wheel that is almost exactly the section width?

is there a functional explanation from any of the tire companies for that?

alphalanos

compromises sidewall strength among other things. the beads have to be within a certain range inside the overall width of the tire for the carcass support to work properly. dont forget that an "8 inch" rim is actually 9 inches wide.

toyomatt84

iTrader: (1)

Correct. Here's a diagram:
Wheel width = A
Outer lip dimension = B
Tire height = C
Tire section width = D

psychoboy

i'm with you so far.

what if i'm dealing with a tire that's larger than nominal?

i've seen some seriously wide 205/50s and some relatively narrow 205/50s.

the kumho xs for example, is a pretty beefy tire. the firehawks i used to run were tiny by comparison.

PSU

iTrader: (2)

Unless you are out doing track days and events every single day, you will be more than fine with a 205 on an 8".

STRATTON

ull be fine on a 205 with a 8 rim.

alot the higher end tires, such as azenis, star specs, bfgs etc, their 205 tires are more like 215s, so keep that in mind.

stratton.

hoo my gosh

That's the stupidest thing I've ever read

PSU

iTrader: (2)

Says you.

.Manny.

iTrader: (1)

225/45R15 R-S3s is what I use on my 15x8 wheels

92db2gs-r

ive had 2 sets of 195 50 15 tires on my 15x8 rims one set stretched perfect and one set didnt stretch at all. it also has to do with brand. 205 50 15 wont stretch on a 15x8 rim unless its very cheap

92db2gs-r

no it aint what you just said is the stupidest thing ive ever heard i run 195 50 15 safely on my 15x8 rims

Libertariat

I can't believe any of your are comfortable in using a tire to do what it isn't meant to do. i.e. stretch.

92db2gs-r

a lil stretch is ok

Libertariat

I bet the tire manufacturer disagrees and will void your warranty if they knew.

Crxpablos

Kind of right. There are given limits to what tyre width goes on what wheel width, each manufacturer gives there own and the majority will say no to your sizes......

Except Falken who are happy for you to put a 195 on an 8J even. Its in the limits they give for their own tyres.

Go figure

OldSchool Honda

Since we are on the topic of stretched tyres...
Whyu does it seem 1950's formula cars used stretched tyres?

Libertariat

Because those tires aren't stretched. Those were surely manufactured that way to enlarge the sidewall for better handling.

There's no way in hell they deliberately stretched tire sidewalls to fit on wheels like all these kids are. I've seen plenty of photos and my mechanic has even bit hit on the highway by a kid whos stretched tires on his hellaflush civic burst at the sidewall and he lost control.

You think those stretched sidewalls can put up with the extreme forces, high temperatures, and high stress from 150mph+ road racing? They wear out prematurely on our econobox civics on daily driving.

psychoboy

i get why i don't wanna stretch an 8 inch tire on a 10 inch wheel..

i'm trying to get someone to explain why i shouldn't mount an 8" nominal wide tire on an 8" wide wheel....especially when it's a big 8" nominal tire.

i don't understand why this is either dangerous or will cause the tire to perform poorly:


but cramming that tire onto a wheel that is 2 and half inches narrower will result in a better performing tire.

psychoboy

bias ply tires are an entirely different animal.

Libertariat

In case you missed it the first time.