i just got some 18x7 1/2 diablo wheels imported from the states through a mate now all i need to know is how do you work out what offset they are.....just need to check he got right ones for me before i put tyres on monday

i just got some 18x7 1/2 diablo wheels imported from the states through a mate now all i need to know is how do you work out what offset they are.....just need to check he got right ones for me before i put tyres on monday

bolt them up and see if they fit?

however.. why did u bother importing 17"s?? sorry but seems pointless to me?

however.. why did u bother importing 17"s?? sorry but seems pointless to me?


Ummm, it strikes me that he didn't.
It would appear based on the original post that they are 18's.
18 x 7.5 to be precise.

Post pics tho' OP, I'm looking for ideas on what to replace my current set with; I don't like them. :)

Ummm, it strikes me that he didn't.
It would appear based on the original post that they are 18's.
18 x 7.5 to be precise.

Post pics tho' OP, I'm looking for ideas on what to replace my current set with; I don't like them. :)

i would tend to agree. how did you get 17" out of 18 ?? we lost an inch somewhere!
and maybe he likes the design of those particular rims...

i would tend to agree. how did you get 17" out of 18 ?? we lost an inch somewhere!
and maybe he likes the design of those particular rims...


oops my bad, typo...

but still 18's are still pretty much the norm over here and seems a little pointless and a lot of money for nothing too out there.. maybe a pic will help me understand.

just checking if you have searched all around the back of the spokes or what ever style of rim you would call it.. it's normally stamped on the rim on the back..

As said there should be offset info stamped on the back of the spoke (usually).
It should contain letters ET, abbreviation of the German word Einpresstiefe, which is translated as "insertion depth", and two digit number.
For instance Magna's offset is marked as ET46.
There also may be letter P which stands for positive or sign +, next to the number.

if it isn't stamped on the spokes or the rim, lie the rim on the ground with the spokes pointing up. measure the width of the tim (in this case it SHOULD be 7.5" but you need it in mm) then halve that amount. that halved amount is where you work out your offset from. that is 0 offset. we will call this amount X. now measure the distance from the holes where the wheels studs go through to the ground. we will call this Y. finally subtract X from Y and the number you are left with is the offset. this number can be both positive or negative (negative is massive dish).

thanks for the info, got them fitted with 235 40's, yeah they are 18's, i like the design but that wasn't the reason for importing them. the real reason was they were completely free. my mate is an importer (mainly 30+ foot boats)

if it isn't stamped on the spokes or the rim, lie the rim on the ground with the spokes pointing up. measure the width of the tim (in this case it SHOULD be 7.5" but you need it in mm) then halve that amount. that halved amount is where you work out your offset from. that is 0 offset. we will call this amount X. now measure the distance from the holes where the wheels studs go through to the ground. we will call this Y. finally subtract X from Y and the number you are left with is the offset. this number can be both positive or negative (negative is massive dish).

to convert inches to mm 1" = 25.4mm

to convert inches to mm 1" = 25.4mm

Just in case anyone isn't aware, google can do this (and a giant heap of other conversions) for you. :)

Eg. Google for:
1 inch in cm
or
12 inches in mm

It can convert almost anything into almost anything else; I know it can most units of measure and currency if given correct currency codes.
Eg.
1 AUD in USD
or
1 GBP in AUD

However, slightly mroe on topic, what is the standard rolling diameter of the KF Verada? Someone mentioned previously that my wheels and tyres were off standard, just wondering therefore what the standard actually is. Thanks. :)

thanks for the info, got them fitted with 235 40's, yeah they are 18's, i like the design but that wasn't the reason for importing them. the real reason was they were completely free. my mate is an importer (mainly 30+ foot boats)
what sort of boats does he import?

at the moment he has a 27 foot regal needs to go back over and get some more

to convert inches to mm 1" = 25.4mm
yeah i am well aware of that, but it would still be wise for him to measure it to be exact. if they call it a 7.5" rim and it is actually 7.55" and he only uses 7.5" instead of measuring it exactly then his calculations are going to be wrong.