seat stiching ripping

my 1985 500sel has had the back seats repaired before but now they are ripping agin it is in the mittle towards the back by the two stichings why are these ripping over and over i thought it might be beacuse of the moving seat it seems to be so tight how much should it cost to hix it i cant remper what it cost before

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Dan Younes
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1985 euro 500sel 220k
1981 300sd 278k sold
1979 240d 298k sold
1983 300sd 272k sold
1989 chrysler 2.2l Turbo
Leabaron 140k
1989 Dodge Carvan Se 295k
1996 C280(hopefully soon)

I had some seat work done by my neighbor who is in the furniture repair business. He dyed and touched up the seats but said he couldn't repair where there is stitching already because the extra holes from the needle will weaken the leather and they will rip and be completely useless after that. He said to wait until they are shot, then he will replace the covers. If there is stitching there, you can't stitch it again or it will continue to rip. Has it been stitched over stitching? I am sure there are replacement covers as I have seen them advertised. Let me know if you need this information. Good Luck.

Steve
'85 500SL (Euro)