Widest tyre to fit a rim size

gIGoN

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Jan 6, 2004
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Hi guys,

Please advise me what is the widest tyre which could fit the following rim size:

1. 6.5jj
2. 7jj
3. 7.5jj
 

maxximuz

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Oct 7, 2009
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1. 6.5jj = Min 185 ; Ideal 195 or 205 ; Max 215
2. 7jj = Min 195 ; Ideal 205 or 215 ; Max 225
3. 7.5jj = Min 205 ; Ideal 215 or 225 ; Max 235
 

maxximuz

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Oct 7, 2009
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1. 8jj = Min 215 ; Ideal 225 or 235 ; Max 245
2. 8.5jj = Min 225 ; Ideal 235 or 245 ; Max 255
3. 9jj = Min 235 ; Ideal 245 or 255 ; Max 265
 

gIGoN

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guys, i bought this second hand rim which has 7.5jj and the tyres fitted wuz 245/45/18. Is it ok if i replace with the same spec? The tyre seems to be holding on fine.
 

viper5965

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Oct 6, 2007
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it only effect your poket......tyre price and fuel consumtion bcoz widest tyre friction..:idea:
it yr choice,if ur capable u can replace with same spec..:listen::biggrin:
 

gIGoN

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just tried fitting it into the car and guess wat it wont fit with 245/45/18.

would 245/40/18 be safe on 7.5jj since currently it's using 245/45/18
 

r3dster

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Mar 26, 2006
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shoud've been more specific.different car, different fitment. aspect ratio for an evo and r32 is different.245 on a 7.5jj is considered too wide.225/40 should fit nicely
hoho...
when wanna go tt?
 

pangyau

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Oct 17, 2009
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Asking an advice,
I have a 17 X 8.5jj offset +30 for the rim.

Which the best fit tyre for it?
1. 235/45/17 or
2. 245/45/17

My intention is to protect the rim also.
Seem the 245/45/17 kinda hard to find in my place.

Thanks in advance
 

vr2turbo

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Fitting what width tyres to a rim, depends on their aspect ratio also.
Does not mean 225 will fit 8JJ better or 7JJ better.
For example 235/45/R17 will fit 8JJ, but 235/55/R17 will fit 7.5JJ better
 

r3dster

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Fitting what width tyres to a rim, depends on their aspect ratio also.
Does not mean 225 will fit 8JJ better or 7JJ better.
For example 235/45/R17 will fit 8JJ, but 235/55/R17 will fit 7.5JJ better
also dont forget it also depends on what car as well.different car have different wheel arch size as well maximum width where by ideally a certain size is good for a particular rim but it wont fit the car due to width issues...
just my mili cents....
 

vr2turbo

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also dont forget it also depends on what car as well.different car have different wheel arch size as well maximum width where by ideally a certain size is good for a particular rim but it wont fit the car due to width issues...
just my mili cents....
Topic is on what size tyres fits what rim size.
For fitment to cars, always work from original tyre size, then whether plus 1 or plus 2 factor, then work out tyre wide and tyre aspect ratio, not to be more than 3% over the original diameter
 

nikolaiski

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Nov 4, 2005
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Hey guys..

I'm currently running 215/45 17" on a 7.5JJ offset +35 rim (Evo brembo on a Lancer CS5 4G93T)

I want to change to 8jj rims where there are alot of +35 offset sizes, BUT don't want to put 225/45 tyres on them because sure to rub my fenders (roll already!) when I go track (must set coils to a lower setting to be ideal)

Is it possible to run 215/45 17" on an 8jj and safely go to TRACK and up and down NSHW from JB-Penang once in a while, ie. drive like gila? lol
 

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