19" Rears rub on arches.....before lowering springs...!

PS78

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2002 RT/10
with 1/2" lowering caps
Just changed to the new Forgeline GA3Rs with 345/30r19 PS2s and getting contact on the rear arch tops...
Aiming to get stock shocks stiffened to 1.25 turns etc (as detailed elsewhere on VCA) but, with a set of eibach lowering springs eagerly awaiting fitment, my questions are:

how am i gonna stop the tyres rubbing, once the spring are on and the original caps are back in (i.e. car to be lowered further 1/2")???

how much stiffer are the lowering springs beyond stock and is that sufficient to stop rubbing on a viper 1" total lowered, with 19" wheels?

Have read on the forum of owners lowering by 1.5", with obviously larger dia wheels - how?!

is body panel shaving/ widening, etc required?

Thanks :)
 

Red Snake

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You are going to have to run a smaller diameter tire.

Those of us with 20" wheels have a similar delima. PS2s come in 335/30/20 and they will usually scrub on a lowered car (and a lot of stock height cars). Most run the 345/25/20 Nitto Invo which does not rub on a lowered Viper.;)
 
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PS78

PS78

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smaller apsect ratio? have been hunting for
335/25r19 (tyre wall= 84mm) or
345/25r19 (86) - don't seem to exist!...only
355/25r19 (89...still less than the 104 on the 345/30r19!)

wonder if there's any significant additional clutch stress when fitted with the 355s.....?
 

Timnineside

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I run the 345/25/20 Pirelli's and only rub when the tank is full and hit a huge bump while having two people in the car.

And my car has the Eibach lowering springs with caps. So you must have some big O' tires on that thing!
 
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PS78

PS78

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well....no?...just the 345/30r19s....

are the eibachs stiffer just to compensate for the 1" lowering result, or are they stiffer still to further resist chances of contact?
 
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PS78

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well eibachs on now (so total now 1" lowered - original caps back on) and front shocks set .5 turn back from full stiff, rears: 1 turn back
not as much rubbing as before but still happens...
 
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PS78

PS78

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will try increasing the shock dampning to full stiff & .5 back.... then if not working, onto stiffer springs...
 
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