If I'm installing 15mm wheel spacers in the rear of my 99 maxima....will I require longer bolts? What about 10mm and 20 mm? If so, does anyone know where I can order a set and bolts if I need them? I was considering H&R 15mm or 20mm but can't find them anywhere.

 

ya for 10mm and higher spacers you do need to install longer wheel studs. 5mm and less you can get away without replacing the studs. the h&r kits do come with the longer studs.

http://www.optionimports.com/h-r-spacer-nissan.html

 

Anything more then the 5mm and you will need the longer studs. If you buy H&R Spacers new, they will have the studs. If there used with no studs then you will have to by them seperate.
If you wish to keep the same lugnuts you currently have then you need to get studs with the same thread, 12x1.25.
Nismo makes some that will work. For the 15mm the Nismo 50mm long should be good. For 20mm the 60mm studs should work for those.
http://www.courtesyparts.com/Merchant2/merchant.mvc?

If you dont care about using th same lugs and wish to save cash,
these should work,...
http://store.summitracing.com/partde...0&autoview=sku

 

H&R and Eibach wheel spacers that come with longer studs will have the correct 12X1.25 studs with then....others off ebay i cant gurantee they will come with the right ones...but yes anything larger than 10mm i highly recommend longer studs...H7R are the best deal....bewtween the cost of 10 nismo studs and either h&R, eibach, or BAER spacers that DO NOT come with studs u will pay more than if u buy H&Rs and Eibach that do come with them