Space Saver Question

[mattie4270]

Hi guys,my R32 gtr has R34 gtr wheels fitted.Now my question is,if I get a flat and put the R32 space saver wheel on the back then the diameter compared to the R34 wheel is different and wont this hurt the LSD diff?Is a R34 space saver bigger in diameter compared to the R32 wheel?If so I will source one,any ideas appreciated,cheers Matt

[GTR-N1]

Have you measured the rolling diameter of your current spare and placed it in front of your R34 wheel for comparison?

It's the transfer case that's at risk if the two diameters are different.

[KiwiRS4T]

If you have an R32 GTR and get a flat and find the spare is the wrong size you can just pull the awd fuse to put it into 2wd. (Not the case with R33 or 34).

[R.3.2.G.T.R]

are the space savers on 32R, 33R and 34R the same size or varies as per different model factory wheel sizes?

[bradsm87]

R34 GTRs use a 245/40R18 but you would need a 245/35R18 or 255/35R18 to keep the correct diameter for an R32 GTR.

[StevenCJR31]

just turf the space saver and put a full size spare in the boot. . . fixed

[OnAllFour]

Easiest way to do it is, go to the following link,

fill out the details as far as what size tyre you are running on the car as well as the size of the temp spare.

It will then calculate the rolling diametre of both tyres and give you a comparison on the difference in size between them.

This will then tell you if the temp spare is suitable or not in percentage.

For the temp spare to be suitble, the calculation should give you a difference of between

98% to 102%. (A tolarence of roughly 2mm either way)

Anything greater I wouldn't realy recommend using.

http://www.miata.net...e/tirecalc.html

Edited May 3, 2012 by OnAllFour