215/40 r17 vs 205/40 r17 tire sizes

[91shelby]

what is the difference between the two?

[Screamin4banger]

well, 10mm from sidewall to sidewall and 8mm difference in diameter

40% of 215 = 86
40% of 205 = 82

so, 8mm difference in diameter (assuming same tire brand, style, tread depth, etc))

... and each tire mfg will give you the rim width range for each of their tire sizes per style. if you are looking for tight handling, you want the widest rim for that size you can fit.

for example, if you have size 'a' and size 'b'...
and the book lists something like: 'a' is 5.5" - 7.5" and 'b' is 5"' - 7"
and you know you are going with a 7" rim, using 'B' on the 7' rim will be tighter handling than 'a' on the same rim even though you might think the wider tire will handle better...

if that makes any sense?

I could find a better way to say it

[91shelby]

would they both fit on the same rim?

[TonaChris]

i think they do, because im almost positive that those were the choices i was given when i got the 17x7's on my tona. be warned though, the 40 series ride like sh*t

[Screamin4banger]

Quote:

Originally Posted by 91shelby would they both fit on the same rim?

what tire are we talking about here? be specific

[91shelby]

fuzion zr1 215/40 r17 to relpace 2 205/40 r17s that are on a set of rims i got, i know the thing will ride harder with the shorter tires

[Screamin4banger]

Quote:

Originally Posted by 91shelby fuzion zr1 215/40 r17 to relpace 2 205/40 r17s that are on a set of rims i got, i know the thing will ride harder with the shorter tires

after looking at the specs at the site, I would go with the 205/40R17 XL listed if you have 17x7 rims

EDIT: If you have 17x7.5 or 17x8, the 215's would be ok

[91shelby]

yeah the rims i just got are 17 X 7

[91shelby]

also what thread are our wheel bolts? cause i have to get separate lugnuts for my new wheels

[Screamin4banger]

hmm... is it M12 x1.25? - don't quote me on that
thats whats coming to my mind, maybe you can double check at the tire rack or an online store like that.

the 215's you are looking at have 7.4" tread, the 205 versions have 7" tread, thats why I said what I did

I'll look for my book and get back to you on the lugnuts


EDIT: found the book.... M12 x 1.5

[91shelby]

awesome thanks again