interco has some "birddog wheels" that hold a bead at low psi...
they are a 9" wheel.
now, in a search here, i read a post by an admin in 2008 stated that both the 7" and 7.5" neutral. he went on to state the backspace of the 7.5" was 3.75 inches.
im not sure if that info is prima facie here, but that would be incorrect. theres something wrong with the statement. either the BS is greater or theres a negative offset to isuzu wheels.
RIM WIDTH is inside bead to inside bead.
BACKSPACE is is the physical back of the rim, to the mounting surface.
OFFSET is the wheel center line to the mounting surface.
backspace measuerment has an accepted nominal .5 inch per side when calculating using the rim width center line. sooooo.. a neutral 7.5W wheel ought to have a backspace there'a'bouts of 4.25 inches (3.75+.5). the 7" wheel ought to be within a pinch of 4". if you want exact you need to field measure.
now... heading to the question im brewing up..
the patient is a gen one RS.
the birdgog wheels come in a backspace of 3.5" and 4.5". the goal is a 33x12.5x15.
assuming the rims truly are neutral, clearly the 3.5 inch backspace will stick out too damn far even with fender flairs, and likely wear out hub bearings too quickly.
the 4.5 inch backspace sets the rim .25"'s more inboard than the 7.5w snowflakes, which doesnt seem like a whole lot, but i dont know where the threshold for interference is. it seems any possibility of running these rims would be with the greater backspace product.
so, assuming theres no negative offset to isuzu rims, i guess im looking for input from 7.5" snowflake owners (or comparable aftermarket) with the wider 33"s as to whether or not im within interference limits utilizing a 2-3" spring lift and a 1" body lift. maybe 2" and 2" is better.
on the other hand, if there is negative offset on the stock rims im currently unaware of, i guess that limits me to the 3.5" backspace, which i doubt i'd like.
its a rather specific question, that i may not get a direct answer to, so any opinions are welcome.
they are a 9" wheel.
now, in a search here, i read a post by an admin in 2008 stated that both the 7" and 7.5" neutral. he went on to state the backspace of the 7.5" was 3.75 inches.
im not sure if that info is prima facie here, but that would be incorrect. theres something wrong with the statement. either the BS is greater or theres a negative offset to isuzu wheels.
RIM WIDTH is inside bead to inside bead.
BACKSPACE is is the physical back of the rim, to the mounting surface.
OFFSET is the wheel center line to the mounting surface.
backspace measuerment has an accepted nominal .5 inch per side when calculating using the rim width center line. sooooo.. a neutral 7.5W wheel ought to have a backspace there'a'bouts of 4.25 inches (3.75+.5). the 7" wheel ought to be within a pinch of 4". if you want exact you need to field measure.
now... heading to the question im brewing up..
the patient is a gen one RS.
the birdgog wheels come in a backspace of 3.5" and 4.5". the goal is a 33x12.5x15.
assuming the rims truly are neutral, clearly the 3.5 inch backspace will stick out too damn far even with fender flairs, and likely wear out hub bearings too quickly.
the 4.5 inch backspace sets the rim .25"'s more inboard than the 7.5w snowflakes, which doesnt seem like a whole lot, but i dont know where the threshold for interference is. it seems any possibility of running these rims would be with the greater backspace product.
so, assuming theres no negative offset to isuzu rims, i guess im looking for input from 7.5" snowflake owners (or comparable aftermarket) with the wider 33"s as to whether or not im within interference limits utilizing a 2-3" spring lift and a 1" body lift. maybe 2" and 2" is better.
on the other hand, if there is negative offset on the stock rims im currently unaware of, i guess that limits me to the 3.5" backspace, which i doubt i'd like.
its a rather specific question, that i may not get a direct answer to, so any opinions are welcome.