I had the same size of tires as you, I made the mistake of buying 245x17 because they hardly help. Like "HAMMER" is saying to much power in the rear end. Installing 3:73 gears makes it worth.
Right now I am planning on leaving the front tires but get couple of wide @ss for the rear maybe NITTO 555R or MIKEY THOMPSON.
I spend thousands of dollar trying to fix this problem by changing the whole suspenssion but so far far the tires still spinn like hell.
Let me know if you find the cure.
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99GT…
rear sway bar (adjustable)
rear lower control arm
traction bars,
tokiko struts illumina 5 position,
tokiko shocks,
caster camber plates
racing lower springs
3:73
strut tower brace
underdrive pulleys
Michelin “pilot XGT-Z4. 245x17
No silencer
No spare tire
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