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My SSRs have been recently flipped, as in I flip the faces in the rear to achieve a bigger lip from 5.5" rear lip to. 6.5" rear lip, thus changing the offsets all together.
Ive heard two things
1.) soneone told me you measure offsets from your Hub . Your hub on your rotor is +0 , is this correct? If so +0 is where the hub meets the faces of the wheel right? Which changes my calculations on my offsets then . Can someone please verify this to me.
2.) i had thought my offsets were 19x12 -13 cause someone told me the center of the wheel is 0 offset. So I measured 12 inchs from bead to bead, the center of the wheel would be at 6inches with a 6.5" rear lip now, that 1/2 inch going away making it 12.5mm (I rounded up to -13).
I only brought this up cause I couldn't figure out why test fitting my friends rotiforms (edafes old sjc) 18x12 -16 I had so much wheel gap. I thought it was odd but I just let it go n didn't bother but now hes selling the rotis n getting another set these are 19x12 -26 and the lip size to offset ratio is what brought this issue back up n back to my attention
My question is that I have the same size 19x12 with a 6.5" rear lip. I'm very confused since the 19x12 -26 has a 5.5" rear lip . I thought the bigger the lip the more negative the offset?
Sorry for the longest question , but someone here knowledgable enlighten me please!
If I measured it wrong I think I'm more negative then I thought
Ive heard two things
1.) soneone told me you measure offsets from your Hub . Your hub on your rotor is +0 , is this correct? If so +0 is where the hub meets the faces of the wheel right? Which changes my calculations on my offsets then . Can someone please verify this to me.
2.) i had thought my offsets were 19x12 -13 cause someone told me the center of the wheel is 0 offset. So I measured 12 inchs from bead to bead, the center of the wheel would be at 6inches with a 6.5" rear lip now, that 1/2 inch going away making it 12.5mm (I rounded up to -13).
I only brought this up cause I couldn't figure out why test fitting my friends rotiforms (edafes old sjc) 18x12 -16 I had so much wheel gap. I thought it was odd but I just let it go n didn't bother but now hes selling the rotis n getting another set these are 19x12 -26 and the lip size to offset ratio is what brought this issue back up n back to my attention
My question is that I have the same size 19x12 with a 6.5" rear lip. I'm very confused since the 19x12 -26 has a 5.5" rear lip . I thought the bigger the lip the more negative the offset?
Sorry for the longest question , but someone here knowledgable enlighten me please!
If I measured it wrong I think I'm more negative then I thought
my friends coming over to measure it for me . And Im not fixating on the lip sizes, I was told the bigger the lip, changes the width n offsets of your wheel. 
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